

A guide to understanding VELUX sizes & size charts.
Jul 29, 2024
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Understanding VELUX window sizes can be complicated. VELUX windows sizes are reflected in VELUX window codes. These different codes are relative to different decades why makes it hard to master VELUX window sizes. In this blog we will give you a simple guide on understanding all types of VELUX sizes, from the window size to the structural opening size.
Current VELUX window codes & sizes.
How do these codes match up across all decades?
VELUX Window sizes 55 (W) x 78 (H) code 102 or C02 or CK02
VELUX Window sizes 55 (W) x 98 (H) code 104 or 6 or C04 or CK04
VELUX Window sizes 78 (W) x 98 (H) code 304 or 1 or M04 or MK04
VELUX Window sizes 66 (W) x 118 (H) code 206 or 5 or F06 or FK06
VELUX Window sizes 78 (W) x 118 (H) code 306 or 14 or M06 or MK06
VELUX Window sizes 78 (W) x 140 (H) code 308 or GGL2 or M08 or MK08
VELUX Window sizes 134 (W) x 98 (H) code 804 or 7 or U04 or UK04
VELUX Window sizes 114 (W) x 118 (H) code 606 or 4 or S06 or SK06
VELUX Window sizes 94 (W) x 160 (H) code 410 or 3 or P10 or PK10
VELUX Window sizes 134 (W) x 140 (H) code 808 or 8 or U08 or UK08