Brand New North Star Single Slider Window 3-1/4" frame with 1/2" brickmold which makes it 5-1/4" deep Wood/drywall return on inside Dual pane double Low E glass rated for Zone 3 Energy Star Black out and black in Betterview fiberglass screen Full lifetime warranty including sealed unit from North Star 76" x 36" - frame size 77" x 37" - brickmold size