Decco Extrusion’s single-hung window sash can be lifted only from the bottom and has fixed glazing in the upper part. The company reports it is energy-efficient and easy to operate, and features include an integrated flipper suitable for new construction, triple labyrinth lock sealing, integrated accessory slots and handles integrated in the sash frame. The window has a chamber in the frame and in the fixed post for mounting a mosquito net, a sloped sill for rainwater drainage and a rib to stiffen the sill and prevent deformation.