Velux BBX 0000
Velux BBX 0000 Vapour barrier which is 100% vapour-tight and prevents condensation.
Help & Useful Information
How do I find which Window Type I have?
VELUX Type Signs (Data plate) explained
Every VELUX roof window carries a unique Type Sign that details the type and size of the window. In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.
Type Signs differ in appearance depending on the model of your VELUX window. Please identify and select the version of Type Sign on your window from the illustrations below:
Step 1 - Locating the type sign.
In most cases the Type Sign is located at the top right-hand of the sash, behind the control bar.
Step 2 - Finding the codes.
Depending on the year your window was produced you'll find one of the type signs listed below.