I’m replacing an old Velux skylight and need to know it’s rough opening before I tear it off. It’s over 20 years old and Velux doesn’t have the info. Any help would be appreciated.
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
![](https://images.finehomebuilding.com/app/uploads/2024/07/10133441/01232535-cali-valley-heads-east-feature-Large-thumb-16x9.jpeg)
Construct the intersecting gable on the main roof for a faster, easier-to-build assembly.
Featured Video
How to Install Cable Rail Around Wood-Post CornersHighlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
Do you have the model number of the old unit? When mine failed, I called and Velux gave me a replacement model number that was an exact fit. The new unit could have the dimensions you need?
I just took off the interior trim and low and behold the contractor left trim measurements on the inside of the frame. I put a steel ruler under the frame and got the frame thickness. I think I’ve got it. Thanks for the reply.