Sunrise Windows' introduces a vinyl replacement sliding patio door, featuring the Internal Mini-Blind System. Mini-blinds are sealed between the insulated glass unit, which go up and down as well as tilt. The heavy-duty aluminum screen is top hung, rolling easily because all the weight is supported from the top. The screen also features a true positive lock, operated by a thumb turn that engages into a recessed latch. Quad4 Plus weather-stripping, featuring two compression foam seals and two fin seals at the jamb pocket, guard against air infiltration.