Beckson Marine 4" Clear Center Screw Out Deck Plate - Black

Beckson Marine 4" Clear Center Screw Out Deck Plate - Black. They incorporate a self-aligning center and an innovative gasket to assure a watertight seal. A back-up sealing wall leaves the plate watertight even if the gasket is removed. Our clear center plates permit observation of controls or gauges and visual inspection without the necessity of removing the center. Deck plates are used for access to shut-off valves or back-fastenings inspection and clean out for tanks and compartments. A screw