Fusion welded, maintenance free, all vinyl frame and sash construction.Energy efficient 3/4 in insulated glass standard. U Value .48True sloped sill for efficient water removal.Pivoting friction hinge system allows sash to rotate and stay at desired opening.No tool sash removalFully weather stripped - 2 times sash top and sides and 3 times sash bottom.Full screen included.Cam locking handle and pre-drilled installation screw holes.Extruded fin on sill for mortar grab.Sash block fins for new construction or strippable for replacement.

1PK Duo-Corp Aristoclass Hopper White Glass/Vinyl Window 15-1/4 in. W x 32-1/8 in. L 1 pk