Seaflo Screw-Out Deck Plate Inspection Hatches provide watertight security and tool-free easy access to valves, tanks, and compartments. These deck plates feature a self-aligning center that makes cross-threading and misaligning virtually impossible. Designed with a non-skid surface, Seaflo deck plates allow horizontal or vertical mounting. These inspection hatches are constructed from polypropylene plastic for extra resistance to sun, water, and salt. Watertight protection Durable polypropylene construction Tool-free access Self-aligning center Non-skid surface Horizontal or vertical mounting Highly resistant to sun, water, and salt