21 X 27 Shed Window Safety Glass Storage Shed Garages Playhouse Tree House (White J-Channel) Aluminum Window Painted White or Brown Safety Glass Comes with Screen Rough Out Window measures 21" x 27" Rough Cut 21-1/4" x 27-1/4" Over all measures 22-1/2 x 28-1/2" Dept 1-1/2"