
You can easily find VELUX window codes on the top right-hand edge of the roof window when you open it. The data plate tells you the type of window it is and the window size shown through the code (as seen below.) As shown in the above example, 304 would be 78cm x 98cm and the bottom window code 4, would be 114cm x 118cm.
Where are VELUX window sizes located?
But, do remember that window sizes are for the external window frame and not internal measures. Where Are Velux Brand Window Codes Located? You can easily find VELUX window codes on the top right-hand edge of the roof window when you open it.
What do the VELUX window codes mean?
Once you know your VELUX window code you can use this to replace the existing window or you can order the right spare parts or new glazing. The plate denotes the type, the size, the variant, and the production code. The type, size and variant will look familiar if you’ve looked at VELUX windows before.
Will the new VELUX flashings fit my old window?
However, this is not a problem, as the new off-shelf VELUX flashings can be made to fit any older window, in many circumstances. Here are the old VELUX sizes, serial number and number codes -
Where is the data plate on a VELUX window?
Finding the data plate All VELUX roof windows made after 1968 have a data plate (or type sign) giving exact information about the model. This is located in the right corner of the top sash, just behind the ventilation flap. For further guidance, the video below will help you locate your data plate.
See more

Where is the model number on a Velux window?
Finding the data plate All VELUX roof windows made after 1968 have a data plate (or type sign) giving exact information about the model. This is located in the right corner of the top sash, just behind the ventilation flap.
What is the difference between VELUX GGL and GGU?
The centre-pivot window is a classic and versatile design manufactured in high quality natural pine with the option of a clear lacquered pine internal finish (GGL) or a white polyurethane internal finish (GGU).
What size is a VELUX GGL 304?
78cm x 98cmAs shown in the above example, 304 would be 78cm x 98cm and the bottom window code 4, would be 114cm x 118cm.
What is a standard size Velux window?
Velux Roof Window DesignsWindowWidthHeightVELUX BK0447cm98cmVELUX CK0155cm70cmVELUX CK0255cm78cmVELUX CK0455cm98cm22 more rows
How do you reset a Velux VSE skylight?
0:101:00VELUX Tech Tips: How to Reset a VELUX Skylight - YouTubeYouTubeStart of suggested clipEnd of suggested clipUsing a paper clip press down into the hole for 10 seconds the skylight will open and then closeMoreUsing a paper clip press down into the hole for 10 seconds the skylight will open and then close signaling that the reset process is.
What size is VELUX GGL 8?
VELUX GGL UK08 Centre Pivot Roof Window - 134cm x 140cm.
What size is a VELUX GGL SK06?
114cm x 118cmVELUX GGL SK06 Centre Pivot Roof Window - 114cm x 118cm.
What size is VELUX M04?
78cm x 98cmVELUX GGL M04 3059 Window 78cm x 98cm Centre Pivot Toughened - Pine.
Where is the serial number on a VELUX skylight?
Every VELUX skylight and roof window features a data plate mounted on the frame. This data plate contains the product serial number, which tells the skylight model, glass type and date of manufacture.
Are all Velux windows the same size?
Velux windows come in a range of types and sizes. They can be made to fit slim, elongated spaces or wide, small spaces. However, the tallest size a Velux window comes in is 180cm, with the shortest being 55cm. The widest size is 134cm and the slimmest size is 47cm.
Do Velux window sizes include the frame?
When selecting your VELUX window, it's important to know how they're measured. In most cases, the size given represents the measurement of the external frame and not the glazed area.
How do you measure the size of a Velux window?
To measure the length (or drop) of your Velux window, again take your tape measure and take two measurements of the window (left and right). Your measurements should be from the very edge and supplied to the nearest millimetre.
Do Velux window sizes include the frame?
When selecting your VELUX window, it's important to know how they're measured. In most cases, the size given represents the measurement of the external frame and not the glazed area.
How do you measure a skylight opening?
You'll need numbers from both the outside and inside of the skylight. That means the first numbers will be found on the roof. Once you're up there, measure along the side of the skylight where the shingles meet the flashing, width first then length. Next, measure the height of your skylight or curb.
How do you install a Velux window?
3:5810:53VELUX New Generation Roof Window Standard Installation Into TileYouTubeStart of suggested clipEnd of suggested clipWe will fully fix the bottom brackets of the window with a 30 millimeter. And 80 millimeter screw inMoreWe will fully fix the bottom brackets of the window with a 30 millimeter. And 80 millimeter screw in each bracket. Making sure that the 80 millimeter screws are drilled through the batten.
What is a velux skylight?
VELUX Modular Skylights is a new skylight system made for architects and builders in search of new ideas. Modular Skylights can be combined in a number of rooflight configurations, creating perfect solutions for a wide variety of building types.
What is a Velux sun tunnel?
The VELUX Sun Tunnel® Skylights bypasses all obstacles, using an adaptable reflecting tube to direct daylight into every area of your home. The effect is brighter and more comfortable living areas.
What is a Velux Dynamic Dome?
VELUX has revolutionized the commercial skylight market with the introduction of the new VELUX Dynamic Dome, an innovative product that balances the structural demands of industry professionals with an architecturally progressive design.
How many shades are there in the shade collection?
Make a statement with shades! Our new shade collection can help turn an ordinary room into something special. With over 100 colors and pattern choices available, you can design your space to reflect your personality.
Where is the data plate on a Velux window?
This is located in the right corner of the top sash, just behind the ventilation flap. For further guidance, the video below will help you locate your data plate.
Does Velux have a code?
Every VELUX window has its own personalised sign that consists of codes telling you what window you have, but finding it isn’t always obvious. If you are here, there is a strong chance that you are looking to add a VELUX blind or accessory to your VELUX window, or upgrade/replace your glazing, but are unsure as to what code your window is.
What is the code for a velux window?
To explain, if your current VELUX branded window has a code of GGL2, then your new VELUX windows would now have the code MK08. For an even further explanation, take another review of the diagram above and compare your old code, to the new.
Where is the Velux window code?
You can easily find VELUX window codes on the top right-hand edge of the roof window when you open it. The data plate tells you the type of window it is and the window size shown through the code (as seen below.)
What is the size of 304 in a window?
As shown in the above example, 304 would be 78cm x 98cm and the bottom window code 4, would be 114cm x 118cm.
Can Velux flashings fit older windows?
However, this is not a problem , as the new off-shelf VELUX flashings can be made to fit any older window, in many circumstances.
Is Velux out of date?
It's a known fact that VELUX is always improving their products, to help ensure that they maintain the high quality that they are known for. These continuous improvements over the years have resulted in some of the older styles becoming out of date in terms of shelf life.
Can you replace a velux roof window?
If you are looking to replace an existing VELUX roof window, then you can easily use the size guide above to see which new generation code relates to your old roof window code (compare with the diagram below.)
What is a Velux window?
Velux windows are a fantastic way to introduce light and air to rooms. However, the size and shape of the room will have an impact on how much light and ventilation is required in order for a comfortable living environment to be attained. Bigger roof lights offer more light and air than smaller ones, however, you might find ...
What size do Velux windows come in?
They can be made to fit slim, elongated spaces or wide, small spaces. However, the tallest size a Velux window comes in is 180cm and the shortest 55cm. The widest size is 134cm and the slimmest size is 47cm. For more information about window sizes, read our blog here.
Why do we need a bigger roof window?
Therefore, a larger roof window will ensure these rooms are better ventilated and the risk of condensation forming is reduced.
Where is the replacement window plate on a Velux roof?
For any replacement Velux windows, there’s a simple way of determining the required size. Located on the top right corner of the frame on your existing window is a plate. This plate denotes the type, size, variant, and production code of your roof window, which you can use to order an exact replacement. Bear in mind that you can also change the ...
How many windows are needed for a 25m2 room?
For rooms of an overall size of 25m², roughly 5m of window will be needed to maximise light. However, there’s no reason you can’t have more if desired.
How far above the roof plane should windows be installed?
Any windows installed must not protrude more than 150 millimetres above the existing roof plane
Which room receives the most sunlight?
Rooms that are south-facing are likely to receive sunlight consistently. North fac ing rooms, on the other hand, will be lit more dimly throughout the day. East and west facing rooms will also receive either morning or afternoon sunshine respectively. Therefore, knowing how much light the room receives is a good way to determine how big your Velux window needs to be in order to maximise light in there.
What is the new VELUX window code?
For example, if your current VELUX roof window code is GGL2, that means the new VELUX window code would be MK08. To help explain this further, take a look at the chart below.
Where are the VELUX Brand Windows Codes Located?
Did you know that every VELUX rooflight made after 1968 will have a data plate attached to it, which gives exact information about the model. VELUX has created its own personalized stamp which consists of codes that will tell you exactly what type of window/rooflight you have.
What is Velux known for?
VELUX are known for their high quality products and latest in innovation, this also means that their product range will change as time goes on. Making what was once the latest window, an older style as a new one is launched.
Where is the window code on a VELUX roof?
The VELUX brand window codes are found on the top right-hand edge of the roof window when you open it. The data plate tells you the type of window and the window size shown through the code. As shown below in the example, 304 would be 78cm x 98cm and the bottom window code 4 would be 114cm x 118cm.
Can Velux flashings fit older windows?
However, this will not be a problem because the new off-shelf VELUX flashings can be made to fit older style VELUX windows in most circumstances.
VELUX window sizes chart
Shop using our VELUX window sizes chart. Find the model number of the window that fits your space and use it to shop the VELUX window sizes and prices you need more easily. VELUX roof window sizes and model numbers can be hard to navigate as there’s a lot of information to process.
A smarter way to buy building materials
Sign up today for a cash or credit account and exclusive discounts with a CMO Trade Account.
