Using our size guide


Please note all sizes refer to the external frame size of the roof 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.ie or contact us on 01 816 1620.

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 SK06.8

Find a VELUX Certified Installer near you, visit

velux.ie/findaninstaller

For more details visit
velux.ie