VELUX Skylight 22.5-in x 22.5-in Fixed Curb Tempered Double glass in great condition.
QR Code Link to This Post
I have 12 of these for sale; $75 each, or $750 all, green cash only.
It looks to me like the exposed glass is 22-1/4". Inside dimension of the housing (these were originally framed in place with 2 x 4 lumber on edge). You'd need the frame it to accommodate an inside dimension of the frame where it goes over the frame 26", or perhaps a little more in order to make a nice snug fit. They are 27" x 27" square overall outside dimension.