Velux window size

[Jorge2030]

Dear all
I need to replace current Velux window, but it is a really old one (GGL something) and the window doesn't have the identification plate anymore. Only identification is Velterm 1184 between the glasses.
I'm in doubt if new one should be SK06 or UK08.

Internal glass width around 115cm and 114cm height - I'm not able to open the window anymore as it is broken so I can't measure outside.

Any advice?

 

[Jorge2030]

attached picture with measures

 

[SpecialK]

The plasterboard on the inside will need to be removed anyway to replace the window? Then you can measure the external frame accurately?

 

[catlad]

Hi Jorge

Probably best if you measure the internal frame and add 7cm as the frame is 35 mm each side