Fusion welded, maintenance-free, all vinyl frame and sash construction. Energy efficient 3/4 in insulated glass standard. True sloped sill for efficient water removal. No tool sash removal. Pivoting friction hinge system allows sash to rotate and stay at desired opening. Fully weather-stripped 2X sash top and sides, 3X sash bottom. Cam locking handle. Full screen included. Extruded fin on sill for mortar grab. Pre-drilled installation screw holes. New construction or replacement applications. Sash block fins for new construction/strippable for replacement. Individually boxed. Main frame thickness 3-1/4 in. Tip to Tip Frame Size Excluding Fins - 32⅛ in. x 19¼ in.