Using our size guide
Note all sizes refer to the external frame size of the window and not the glazed area. Please refer to installation instructions for trimmed opening sizes.
For product sizes and specifications not listed in this brochure, please visit velux.co.uk or contact us on 01592 778 225
Looking to replace your existing VELUX roof window? Use these handy size charts to locate your current window code and the replacement code.
For example, if your current window code is GGL4, the replacement size code for this is SK06.
All measurements are in mm and cm as indicated.
