Beckson 5" x 12" x 1" Self Drain Opening Port [PO512-WC-10]5" x 12" x 1" Self Drain Opening Port The Beckson Self Drain Opening Port is innovatively designed with an angled drainage ramp molded on the inside of the spigot. This design promotes drainage without having the hassle of making angled cuts in the hull. This also allows for thru bolting, which is impossible in windows where an angled spigot extends below the bolt holes. The internal angle seats tightly against the gasket and lens, thus omitting an