Ryterna Doors

Garage Door vs. Forklift

2023-02-10T12:42:00.000+00:00

How strong is the sectional garage door? To get certification garage door has to go through a series of officially approved quite harsh tests. And every test is pushing the door to the limit. There are mandatory tests like water penetration, wind load resistance or thermal transmittance. But the burglary-proof or damage tests never were on that list. Recently one of the sectional garage doors made by Ryterna had to pass a real-life security test executed by burglars. To find out how it ended read Ryterna's latest case study.

'Facade-flush' garage door system

2021-03-01T14:38:00.003+00:00

'Concealed garage door

Lately, simple garage door cladding is not enough. The latest trend is to get a perfect match. And the perfect match means the garage door must look almost concealed in the house facade.

Cladding materials & garage doors

How it is possible? Mainly by using the same facade panels or other materials for garage door cladding.

There are many facade panels from different manufacturers. It can be a processed timber, composite panels, ceramics, or even glass. Consequently, sizes, shapes, and weights are unlike.

Even more, panel fixation methods to the solid wall and to the moving garage door parts are different.

So we developed 'facade-flush' garage door system to get an almost 'invisible' garage door effect.

Better seen when open

Framework

The main point is that the sectional door must be installed together with an aluminium frame in-between the opening. Also, the special aluminium framework is fixed to the door panels. We make the framework according to the house facade cladding layout and cladding material specifications.

The framework has two main functions. Firstly, it levels the surface of the wall with the garage door surface. Secondly, it is a base for cladding fixation to the door.

Consequently, the customer must provide us with facade project drawings and exact cladding material specifications.

Installed 'facade-flush' garage door before cladding

Springs

Sectional door weight is balanced by the help of springs. By adding extra weight the door balance is ruined and we can't use standard springs as for standard door. Therefore we must choose the corresponding torsion springs to restore the door balance. Otherwise, the door will malfunction.

Glazed garage door clad in 'louvre' style

Sometimes on the bigger door up to 600 pounds are added. And it is much more than the door weight itself. So you can imagine how different the standard and custom springs are. The heavy load can damage rollers, brackets, and door panels. Accordingly, we 'upgrade' all hardware and install reinforcement profiles to keep the door running smoothly and safely.

Garage door & facade clad with oak planks

Finally, we make drawings to show how to cut cladding panels or planks going on the door. By using our drawings, craftsmen can put cladding on in the right way without losing time and wasting materials.

The whole house & garage door clad with pine thermowood

For more info about Ryterna sectional garage doors please click here.

The Art of Cladding

2020-10-20T12:22:00.002+01:00

We offer a big variety of panel designs, colours and customisation options. But our customers, with the little help from the architects, are pushing the limits. And when you think that there is nothing more to be invented or designed an enquiry for something extraordinary comes.

Many different reasons why people are ready to put their money into the garage door. Covering a significant area of the house facade, garage door becomes quite a significant element of the whole design concept. Firstly, architects are keen to get consistent design and match the door with the whole architectural setting. Secondly, customers who need door replacement, are tired of boring uniform design and want to stand out of the rest.

On picture 1 the sectional garage door clad with double cutting calibrated larch laths. Timber was fixed to the smooth surface door panels and coated with oil. The door panels are in 'Anthracite Grey' finish to match facade clinker tiles. Larch itself is very resistant to water and weathering. Oil gives 'deeper' colour and additional protection from the elements. The combination of 'primary' materials like rusty steel, clinker and timber, create an image of sustainability.

1. Sectional garage door clad with latch laths

The door in picture 2 is 7.5 metres wide. During the renovation of the original house from the Tudor era, permission was given to build an additional building which had to match the main house design.

So we used 12 mm thick okoume plywood to create an image of the Tudor era design. We cut planks out of plywood the same width as joists in the front wall and painted the same colour. Okoume is a hardwood which is most resistant to the water. So it can resist weathering for years without additional maintenance.

The architect provided us with the design scheme so we just had to follow it to get the desired image. The final result looks like the building was built in the XVI century and recently refurbished.

2. 'Tudor House' design garage door

Another one interesting job - the garage door forged out of green-copper. As you can see in picture 3, actually, it is 10 metres wide sectionals clad with 0.75 mm thick green-copper tin. We covered thermal gaps with additional tin ribbons so the whole plane of the door looks like a solid structure.

Of course, adding additional weight on the door will put extra load on the whole door construction. Accordingly, we need to calculate torsion spring size, add additional reinforcement bars to keep door panels safe in the open position and add extra suspension brackets. For such size a door there are no electric garage door openers on the market. So we have to pick one of the industrial electric sectional door openers to cope with the weight.

3. Green copper cladding

Pictures 4 & 5 depict garage door cladding options matching with the facade design. Traditionally cedar and larch were used for facade cladding. These are two affordable hardwood sorts resistant to water and the elements. Of course, there are some exotic hardwood sorts suitable for outdoor cladding. But they are quite expensive, so used mainly for luxury shipbuilding.

Recently new wood processing technology entered the market. The result is called - thermowood. Timber is treated in high pressure and temperature so it becomes resistant to the weathering. But the main point is that cheap sorts of timber like pine can be used for outdoor cladding.

4. Garage doors matching facade design

5. Custom design garage doors & facade

But as you can see in picture 6, some exotic hardwood timber sorts are used as well. The door along with fascia panel are clad in 'Redheart' hardwood planks.

6. Door and fascia clad with 'Redwood' planks

The most popular type of cladding is okoume plywood. We use 12 mm thick plywood sheets, but for special designs, we apply 18 mm. We carve plywood to get a custom design. On our product range, there are many standardised designs that can be modified, but the customer also can order a completely bespoke design.

By milling 8 mm deep and 10 mm wide grooves we can create the desired image of the door. It doesn't matter for us how complicated design - the programmable CNC machine-tool does the job. After milling we prime plywood to make it more resistant to water. According to customer specifications, we can paint plywood in almost any RAL or BS colour or coat it with varnish if wood image must be retained.

Pictures 7 - 10 show a few examples of how okoume plywood cladding looks like.

7. Garage door with custom design okoume cladding

8. Okoume plywood cladding with window

9. Plywood varnished to retain wood image

10. Vertical rib design cladding

Timber is the most usable material for cladding, but different materials can be used as well. We did some jobs with various facade composite panels pic.11, fibre-cement planks and even glass pic.12. Usually, for cladding base, we use our standard sandwich-type garage door panels. To get a louvre effect we can clad glazed panels as on picture 13.

11. Garage doors clad with facade composite panels

12. Mirror glass cladding

13. Louvre style cladding on glazed panels

For more information about Ryterna garage & front doors, please visit our web site.

https://www.ryternagaragedoors.co.uk/

How to Measure Garage Door

2019-11-15T13:20:00.174+00:00

The shocking start of 2020 revealed what was obviously a long time ago. Your business is almost worthless if it is not properly presented on the web. E-shops, configurators & calculators are powerful tools for internet sales. But there is a 'small' problem with the garage door sales. In most cases, the opening must be measured.
Nowadays the time is precious as never before. A lot of garage doors' dealers are selling garage doors even without measuring. That means the only thing - the end-user is responsible for exact figures when placing an order.

A personnel problem exists as well. It takes time to train a rookie and make him remember all the technical nuances of the garage door business. Without having enough practice, the possibility of making a mistake is quite high. The mixture of door types, gears, designs allows to pick up the right door for each customer, but also require a good technical background.

A professionally made site survey helps to make the right choice and minimize error chance in the whole ordering chain from surveyor-sales manager-office assistant-manufacturer-installer.

In this post, I’ll try to describe the main garage door measuring tips with specific details for each of 3 main garage door types: sectional, side hinged and sliding and two installation positions: ‘behind reveal’ and ‘in-between’ the opening.

For e.g., in Picture 1 you can see irregular quadrilateral shape opening, shown in black lines. The red line shows ‘in-between’ and the green one – ‘behind reveal’ installation positions.

Picture 1

Of course, the irregular opening shape is a bit exaggerated. But in fact, even a small deviation from horizontal and vertical lines can affect door installation quality, performance and service life.

On the other hand, to get the desired house design weird garage door opening shape can be made by purpose. The same is with arched openings as well.

But the main point is to show how different garage door sizes can be depending on how the opening was measured. Please measure in several places and write down all readings accurately on the paper.

Sectional garage doors can be fitted behind reveal and in-between the opening. Side-hinged doors usually are fitted in between but in special cases behind reveal or on the front wall. Sectional side-sliding doors are installed behind reveal only.

Basic observations

There are 6 basic measures and observations to be done during the site survey. (Picture 2 view from the inside of garage):

Picture 2

W – width of the opening,

H – the height of the opening,

OH – the height of the headroom, usually it is the height of lintel,

SL, SR – free space on left & right side-rooms,

D – free space on the ceiling.

In unusual or complicated cases take pictures. It will be easier later to find out the technical solution. Every problem can be sorted out with the help of an expert.

These basic measures are important for all garage door types.

Picture 3 show more measurings to be done. Very often ignorance of garage door depth or downwards sloping ceiling lead to expensive mistakes.

Picture 3

Headroom & side-rooms

Very important for doors installed behind reveal. First, headroom & side-rooms must be on one plane. Take a picture and measure if part of the surface is jutted out or recessed. Usually, it can be sorted out with timber or plaster.

Picture 4

For sectional doors are critical at least 150 mm of lintel and 100 mm of side-room. For side-sliding garage doors – 120 mm of lintel and whole side-room on the door opening direction side. Check exact technical data for each door type or consult the manufacturer.

Headroom and side-rooms are the favourited places to mount pipes, cables, gas meters or other obstacles. Please measure size up to the obstacle. In Picture 4 you can see some examples of what kind of obstacles can occur.

Picture 5

In the case of sideways sloping pitched roof please take measures as shown in Picture 5. The horizontal yellow line shows headroom height for the sectional door and the red one for the sliding door. Vertical yellow is 100 mm from the reveal and the red one is in the corner. Take both measures in case the customer will reconsider the door type he wants.

Ceiling & Garage Depth

Both sectional and sliding doors require specific installation depth. It can vary depending on headroom for sectional and side-room for sliding garage doors. In any case, the garage door depth D must be measured.

Secondary lintel, ventilation or sewage pipes, pillars, shelves or boilers could cause problems as well. It could also happen that the garage has an irregular shape - acute or obtuse corners, non-quadrilateral, etc. Document all facts on-site – make drawings with measures, take pictures.

In Picture 6 you can see a few complicated cases that can affect garage door model selection and installation. So please measure everything - it won't be too much, but for a door expert will be easier to find the best solution.

Picture 6

Also, check if the ceiling is level. If the ceiling is sloping down, it is necessary to measure the ceiling height at a specific distance from the front wall. For the sectional door, it is H+1 metre and for the sliding door, it is W + 1 metre. Knowing the ceiling height at a specified distance you can find out if the door will fit and qualify necessary means to avoid obstruction.

Windows & Doors on Side Walls

If so, make drawings with measures, mark opening directions, take pictures. The customer won’t be happy if after garage door installation the side door will be blocked, or windows shaded. Having the information, you’ll be able to explain to the customer what is necessary to rearrange or what inconveniences could arise. Customer, knowing all circumstances in advance and accepting, will not be able to complain after installation.

Pitched roof

What if there is a pitched roof with a ceiling sloping up? It is actual only for sectional door because it can be manufactured with a ‘pitched roof’ track system which follows the ceiling's slope. Pitched-roof tracks are excellent space savers so it is worth to measure a pitch angle.

How to measure the pitch angle is shown in Picture 7.

Picture 7

H2=H1-H+OH

α=arctg(H2/L)

Use the scientific calculator or Excel formula: =DEGREES(ATAN(H2/L))

L- can be any distance that is convenient to use for ceiling height measurement.

Please observe garage space where guiding rails or tracks will be installed and the door will be moving during the operation. Check for pillars, support constructions, non-straight walls, non-rectangular shape, racks, shelves, etc.

Corners

Please check the corners alongside the opening. Right angle corners usually come as standard, but in some cases, you can find acute or obtuse corners. If you are so 'lucky', Picture 8 is for you.

For sectional garage doors, it is important to avoid horizontal track intersection with the sidewall. Sliding doors as standard are made with the right-angle corner but can be made with acute or obtuse corners as well. You have to measure the angle to specify in the order.

Picture 8

The calculations are similar to pitched roof angle.

To calculate the angle use your scientific calculator or Excel formula or simply search the web for ‘trigonometry calculator online’ to find out the angle.

α1=90°+arctg(L2/L1)

α2=arctg(L3/L4)

Reveal width

An important measurement for doors installed in between the opening. Especially for sectional garage doors installed flush with the front wall. Wide reveals can cause additional problems for doors with electric openers and for some track systems. Knowing the reveal width, you can choose the best combination of lintel height, track type and door opener.

Floor & Driveway Level

Check if the floor is level. Very often case on the side sloping driveways.

Very light slope acceptable for hinged doors if the garage is not used for cars. Up to 5 mm difference between corners can be compensated with packers during installation. But keep in mind – the frame must be made according to the shortest measure to fit into the opening.

Picture 9

The sectional garage door bottom panel can be made with an inclined cut replicating the slope like in Picture 9. You must specify the height difference in the corners. Best of all is to make a separate drawing to avoid misunderstandings.

Critical specification for sliding doors. The floor must be level in all directions. Al least on the door travelling path. If not, some cutting or cementing job must be done to get the floor level.

Picture 10

For side hinged garage doors you should check the driveway slope in front of the garage door. Please pay attention if the slope looks like in the picture. Door leafs can obstruct the driveway and won't fully open. The solution could be a raised threshold or bi-folding leafs.

Please visit our 'Partnership' page to download 'Site survey form'

Balance adjustment on R40 sectional garage door

2019-07-19T08:04:00.001+01:00

New improved balance adjustment on R40 garage doors.
Extended adjustment range & simplified procedure.

SH2 Hinge assembly

2019-04-19T06:52:00.001+01:00

Front door installation time-lapse

2019-04-10T18:22:00.001+01:00

Aluminium front door with 2 side-lights.
More about Ryterna front doors.

SSD with wicket door

2019-03-29T13:10:00.001+00:00

Side sliding garage door with a wicket.
More about Ryterna sliding garage doors.

Double Side Sliding Door

2019-03-29T13:08:00.001+00:00

Unloading heavy entrance door

2019-03-11T15:15:00.001+00:00

Double Side Sliding Door

2019-02-26T18:38:00.001+00:00

Ryterna Aluminium Entrance Door - Magnetic Threshold

2018-07-16T11:53:00.001+01:00

One of Ryterna aluminium front door features is the magnetic threshold.
Door threshold has triple sealing and ‘pop-up’ magnetic seal. Hi-end durable and low maintenance threshold system significantly improves insulation. When you close the door magnetic seal pops-up and perfectly seal the bottom gap between leaf and threshold. When opening the door you ‘tear-off’ magnetic seal and it gently drops back into its groove. As the magnetic seal is not attached to the door frame, you can easily take it off, clean with a vacuum cleaner and put it back.

Sliding Garage Door with Wicket

2018-06-12T13:23:00.002+01:00

One of the rare cases when customer was asking for a sliding door with the wicket.
All Ryterna sliding garage doors are custom made, so we can match almost all customers requirements.

2018-05-22T13:19:00.003+01:00

Challenging job!
Side hinged door 4x3 m + wicket.

Facade-flush garage door

2018-02-06T18:36:00.001+00:00

XXS Garage Door

2018-01-29T09:02:00.001+00:00

Side Hinged Garage Door installation

2016-05-23T12:13:00.001+01:00

Side Sliding Door installation

2016-04-14T13:05:00.001+01:00

Size matters

2016-03-17T13:07:00.001+00:00

Turbo fitting

2015-05-19T09:36:00.001+01:00

Retro design sectional garage doors

2014-02-17T06:53:00.000+00:00

Retro style doors

Ryterna introduced new design garage door line.
The modern sectional overhead garage door can look like old carriage house door. These doors usually are fitted when heritage buildings are renovated. If the building must look like old, but inside you want to have modern technologies – this is for you.
All doors are tailor-made. Door and appliqué colours can be chosen by the customer. Ryterna offers typical ‘board appliqué’ patterns, but the customer can order his own design and custom colours. Old style black metal hinges and handles are used to create an ancient image. All appliqués and details are maintenance-free and are made for peace of mind. The most popular panel designs are Rib-Woodgrain and Midrib-Woodgrain, but also any design from Ryterna range can be used.
Options like glazed panels or wicket doors are available. Single or double size garage doors are made to measure.

Ryterna sectional door gallery

Side Hinged Garage Doors

2013-03-24T18:45:00.001+00:00

Old Fashioned Style – Offers New Opportunities!

A lot of wooden garage doors fitted 30 – 40 years ago tend to be affected by moisture and rot and homeowners looking for a replacement often struggle or can’t find the same design and style of door.

Ryterna Side Hinged Doors provide a perfect solution if you want replace an old garage door in a similar style or upgrade to a more modern design from the wide range of bespoke side hinged doors in their range.

The doors are made of insulated panels. Double skin 40mm thick panels filled with CFC free PU foam. Thermal conductivity is less than 1 W/m²K. All steel parts are zinc coated and primed before painting. Frames and panels are robust, rustproof and require minimal maintenance.

Manufactured for peace of mind, Ryterna doors come with 10 year guarantee.

Automation

Side-hinged doors are compatible with most electric operators. Conventional garage door operators used with special barn door conversion rods can easily operate a side-hinged door.

Frame Mouldings

As an option – door frames can be supplied with mouldings, the moulding covers the gap between the frame and wall and saves on finishing work.

Colours

The doors are available in all RAL palette and wood-style foil colours (golden oak, old oak, dark oak, rosewood).

Designs

All panel designs in the Ryterna range can be used. The 'Boards' that make up the doors can be assembled vertically or horizontally and in order to create diagonal and chevron designs, obliquely.

Options

Door leaves can be divided evenly – 50/50, or in any other reasonable proportion according to the specification and customers can choose additional options like windows, glazed panels, decorative appliqués or even pet flaps.

Sizes

The maximum size for a pair of side hinged doors is 10ft wide by 10ft high and 4ft wide by 8ft high for single leaf pedestrian doors that match the main garage door design.

More information about Ryterna side-hinged garage doors.

Tailored Finish Solutions

2012-08-09T07:43:00.001+01:00

Ryterna Garage Doors offer Tailored Finish Solutions

Garage doors can cover up to 30% of a house's façade – a significant proportion of the building’s front view. A home's facade is like a business card - first impressions count – and therefore curb appeal should be high on the list of priorities when updating the garage door.

That's why it's so important to choose right design, colour and finish of a new garage door, because replacing an old garage door can increase house value by up to 2%. Also it‘s important to match windows, the main entrance door and garage door design and colour so that they co-exist harmoniously.

Georgian design doors still remain the top seller in the industry and they look great in white, Golden oak or any other custom colour. But people with style do not want their house to look like all the others in the street – so they tend to look for something really tailor made.

A Choice of Colours

Adapting to high end customers’ demands Ryterna recently launched a new painting workshop packed with the latest technologies. Now each garage door can be painted individually allowing unique one-offs to be produced. Customers can choose almost any colour. Usually the RAL palette is used to ensure uniformity of colour, but Ryterna customers can also choose from other palettes to obtain the desired colour.

Additionally, customers can select matt or gloss finish. Starting from matt Low Sheen (~20% gloss), Eggshell (~40% gloss), Semi Gloss (~60% gloss) up to shining Gloss (~90% gloss). A glossy finish looks extremely good with smooth surface panels design like Ryterna’s Slick, TopRib or MidRib+. The 90% gloss finish surface is so shiny, it works like a mirror. Moreover, smooth surface design panels can be painted in pearl effect (metallic finish) colours if you really want to be different.

Custom Style Designs

Ryterna also offers a wide range of stainless steel appliqués, starting from a large varied selection of small details and patterns up to customized solutions. Appliques are made of 0.5mm stainless steel and are glued to the garage door surface. Stainless steel appliques combined with stainless steel windows and a dark matt panel finish can create stunning effect.

Customers can send in their own drawings to have bespoke designs produced. These designs can be as simple as the house number or a beloved car logo, portrait or any picture. Businesses can use garage doors that face the street to publicise their logo or advertisement. Each individual applique is proofed back to the customer for sign-off before production.

Powder Coated Hardware

For customers using their garage for hobbies or to keep an expensive vintage car, Ryterna offers an exclusive option – powder coated hardware. This is the same standard zinc coated tracks, hinges, brackets and bolts with the addition of a powder coated finish. Usually white, but customers can order any other colour from the wide range of powder colours available. If you want your garage to look as good as your dining room – this is for you.

All these features combined with made to measure garage doors up to 12 metres wide can fulfill the most demanding customer requirements.

Solutions for garage short headroom or side-room

2012-03-08T07:57:00.001+00:00

Min headroom 80 mm and min side room 80 mm required to fit sectional garage door.

Sometimes happens that there is not enough space.

Ryterna technical solutions can help in these cases.

Aluminum lintel profile with top weather seal

Available in two sizes: 120 mm and 180 mm. Max length 5 m. Mounting brackets included.

Standard colours – white, 'Golden oak', 'Old oak'. Also can be painted in any RAL colour.

120mm the profile fits with R40, R30 and TL LHR-RM model garage doors.

180mm suitable for TL LHR-FM model. Reinforcement plate for torsion spring included.

Aluminum lintel profile

Aluminum lintel mounting

Aluminium frame: lintel profile with posts

Usually used for fitting in between opening or in situation when headroom and side-room are missing. Lintel profile - as described above. Side posts are 100mm wide. Standard colours – white, 'Golden oak', 'Old oak'. Also can be painted in any RAL colour. Comes from factory preassembled. Made to measure. Max width 6 m, max height 2.5 m.

Aluminium frame

Aluminum frame mounting

Fascia panel

Made of the garage door panel, framed in door colour aluminum profile. Size is not limited. Made to measure. Easy and fast fitting. Requires additional reinforcement for torsion springs mounted on the lintel.

Fascia panel

Fascia panel mounting

PVC lintel profile

Black PVC profile 40X100mm + weather seal. Max length 5m. As option can be a decorative tin strip in door colour. Optional reinforcement profile should be used for fitting on the ceiling.

PVC lintel profile

Aluminium rebated profile

Special 2 mm thick aluminium profile. Standard colour – black. Suitable to increase headroom and side-room by 40 mm. Length up to 6 m.

Aluminium rebated profile

Steel post with fixing brackets

Steel zinc coated 2mm thick rectangular tubes. Two sizes: 40X100mm and 40X80mm. Max length 6m. Suitable to increase side-room up to 80mm or 100mm. Painted in door colour. Made to measure. Two brackets per post for top and bottom fixing.

Steel post with bracket

Using these technical solutions garage doors can be fitted almost everywhere.

If you have a complicated situation and do not know how to fit the garage door, please contact us for a technical solution.

Renovation – replacing garage doors

2012-02-29T09:54:00.001+00:00

Garage doors can cover up to 25% or more of your house facade. Replacing old and shabby garage door will significantly improve view and value of the house. Today we can offer big variety of styles, colours and finishes.

Old fashion garage doors have few significant disadvantages:

Incompatible with modern electrical operators - manual operation only.
Steel doors (retractable or canopy single skin) are not insulated – energy and money are wasted. Condensed vapor in the inner side of the door stimulates corrosion.
Wooden doors (side hinged) require constant care, repainting. Wooden construction is affected by humidity.
Old fashion doors are mounted inside the opening (inbetween opening fit, see Picture 1) using frame – it reduces garage door opening width for about 11 inches.
Canopy, retractable and side hinged doors during operation requires some space in front of them (see Picture 2). No possibility to park car close to the door. You have to watch your legs and head while opening.
Complicated system of levels and pullers work like scissors - it is not safe. Unattended children can seriously hurt fingers.

So what is the solution?

Sectional garage doors:

Compatible with electric operators. Convenient and safe use.
Good thermal insulation. You can save energy and have cozy garage or working space for your hobby.
Possibility to choose inside colour and powder coat tracks in white or grey will fit your high aesthetic requirements.
Plenty of additional options available: windows, wicket door, ventilation grills or even pet flap.
No frame is necessary – sectional doors can be mounted on the inner side of the wall (behind opening fit, see Picture 1). Removing old frame will add up to 11 inches to the width of the garage door opening. For e.g. if old retractable garage door was 7 feet (2134mm) width, so replacing it with new sectional door and removing old frame opening width can increase up to 2270mm. In this case you have possibility to drive in to the garage with modern car. Even with unfolded mirrors! If driving accurately.
Free your mind - all garage doors are made to measure.
Double steel skin, filled with freon free PU foam. Steel tin – zinc coated, primed, painted. Robust, safe and reliable construction.
During operation door moves vertically – it will not hurt anybody standing close to the door or hit the car parked too close.
Modern electric operators allow garage door move reverse without making any harm if somebody is standing in door operation area.
Finger pinch protected sections and rollers with protection makes construction safe for kids.
Weather seal by whole perimeter gives good protection from the elements.

Picture 1. Fitting

Picture 2