How do I find my roof window code when there is no type plate available on my roof window?

Can't find the identification plate on your VELUX window? Don't worry! You may still be able to identify your window size by measuring the visible glass.

Follow these three simple steps:

1. Measure the visible glass: Measure the width and height of the glass visible from inside your room. Make sure you measure the glass only, excluding the surrounding window frame and seals.
2. Find your measurements: Look for your matching dimensions on the table below. All measurements are in millimeters (mm), with width shown first and height second.
3. Identify your window size: Once you've found a match, look across the row to find the corresponding VELUX size code for your window generation. This is the size reference you must enter in the configuration tool here.

A few things to remember:

• Take your measurements as accurately as possible.
• Check both dimensions carefully, as some window sizes may be similar.
• If you cannot find a matching measurement or are unsure which size code applies to your window, please contact our customer service team for assistance.
• If you see more than one size reference listed in the same row, it means that specific visible glass dimension is available across different types of windows, for example, a centre-pivot roof window (GGL) or a vertical fixed element (VFE), these are just some examples, more variations may be available. In this case, please select your window type in the configurator first, and the correct size reference will follow.

VELUX window size reference table

Tip: If you can locate your VELUX identification plate, this is always the easiest way to confirm your window size. You can find more information on how to locate your roof window type plate data here. 

If you have a Keylite, RoofLITE or DAKEA roof window, you can view the visible glass dimensions of the options we support here.