[Sturdy ] Made of high-quality and durable ABS engineering plastics. It has characteristics such as high strength, good toughness, anti-aging, anti-ultraviolet, and good heat resistance. Even if exposed to the for a long time, it is not easy to deform and become brittle. corrosion resistance makes it durable in rain and sea water environment. High impact resistance also allows it to be installed in exposed to heavy treads, such as decks. [Anti-Skid Design] Circular Non Inspection Hatch is designed with square concave-convex surface, which is non- and wear-resistant to prevent people from falling. It also gives people a luxurious visual effect and a pleasing . Carefully polish and trim the edges, and not cut your hands. [ Sealing Performance] Inside the Boat Round Non Inspection Hatch built with rubber sealing ring and thread make Boat Hatch Deck Plate have better sealing performance. Better waterproof and dust-proof effect. [Easy to install and use]This Detachable Round Deck Plate is easy to install, detachable design, no need for professional installation skills and complicated tools. equipment can be replaced directly. 180opening hatches, cover and chassis, allowing vertical or horizontal installation, and a wider range of applications. we intimately equip you with 6 pieces of screws, which are convenient to install and remove. [Wide Application] Boat Deck Plate can be used for inspection and maintenance ports of ships, yacht, , campers, etc. Tip: When installing the inspection hatch, use silicone sealant on the surface of the hull or hatch(Not included) Colour: White : ABS Size: Inner Diameter: 4 inches, Outer Diameter: 5.5 inches, Cutting Size: 4.4 inches. Package Contents: 1 x deck cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.