Five Oceans 4" Boat Hatch, Marine Access Hatch, Round Inspection Deck Plate Hatch with Detachable Cover, Non-Skid, UV Resistant ABS White Plastic, Premium Series- FO4230

MARINE-GRADE MATERIAL: Premium Series 4" Boat Hatch Round Inspection screw-in deck plate is made of anti-aging, anti-corrosive, and UV-resistant ABS white plastic with a smooth finish LEAK-PROOF DECK PLATE: It is designed with a rubber O-ring that creates a watertight seal for safety and allows it to be used for interior and exterior applications EASY INSTALLATION: Designed with a Non-Skid surface allowing horizontal as well as vertical mounting. Screw-in style has a single-start, non-jamming, and no cross-threading. Separate cover plate and chassis for easy installation. 6 #10 Screws Needed (not included) MEASUREMENTS: Inside Diameter: 4" (102mm), Outside Diameter: 5-5/8" (143mm), Cutout: 4-1/2" (114mm), Distance Between Mounting Holes: 4-7/8" (124mm) IMPORTANT: Please, use silicone sealant on the hull or deck surface when installing the deck plate. FIVE OCEANS, 40 Years Developing High-Quality Marine & Outdoor Products