Our Thru-Wall scuppers are ready-to-install and ideal for draining water from commercial low-slope roofs where the roof meets the parapet wall. We offer two standard sizes fabricated with 24-gauge galvanized metal and 60-mil TPO & PVC. Our quality control and weld guarantee ensure that our scuppers will do the job and be watertight. Simply take a few measurements and weld the skirt to the wall. No more bending and cutting metal, applying a skirt and patches, placing and welding the flange.