The Beckson 5" Deck Plate is designed to conceal its mounting fasteners under
the quick twist cover. The low profile cover is self-centering, and quickly
locks in place with a 1/8 twist. Three separate sealing areas, each designed to
chase water away from the plate opening, assure a watertight closure. The
bayonet threads are non-jamming, self-cleaning and lift the center for easy
removal.