Screw-Out Deck Plate - 4in.ID - 6-1/8in.OD - 4-1/2in.Hole - Non-Skid Center - Black

Beckson screw-out plates provide access without the use of tools, with a single start, non-jamming (no cross-thread), extra strong, self-cleaning buttress thread They incorporate a self-aligning center and an innovative gasket to assure a watertight seal A unique back-up sealing wall leaves the plate water resistant, even if the gasket is removed