Please note: there may be slight differences between patterns and colours in the photos and real materials.

Measuring for your roof blind is easy - most of the time you won't even need a tape measure. All you need to do is open up your window, and as you swing it you'll see a small metal patch on the top. This has the brand name of your window and a code. This will differ depending on the make of your window. Velux no harmful chemicals - Oeko-Tex® Standard 100 material testing goes far beyond existing national legislation for health protectioncompatible with VELUX window types: GEL, GFL, GGL, GGU, GHL, GHU, GPL, GPU, GTL, GTU, GZL, GXL, VEA, VEB, VEC On a Fakro plate you will see two numbers divided by a slash or an "x" like this: 78/98 or 78x98. These are the dimensions of your window in centimetres - the first number is the width, and the second number is the height. Dakstra or Rooflite