1.Product Cover Size: Approx. 23 x 23cm / 9 x 9in. Made of quality ABS material, sturdy and stable performance. A good choice. Strong sealing, strong water resistance, can be installed horizontally and vertically. These Hatch Covers help to reduce UV damage to your hatch as well as minimize the light entering your boat. 2.Safe and Convenient : Round boat hatch cover can ensure that the counterweights or storage items in the plywood cabin will not accidentally fall off or move during sailing, thereby maintaining the balance and stability of the yacht. This helps prevent unexpected changes in the center of gravitation and improves the sailing reliability of the yacht. 3.Versatile Design Applications : The easy installation feature makes it a practical choice for the applications both indoors and outdoors; Each boat hatch cover can be installed on a yacht, RV, or truck. 4.Compact structure, light weight, easy to carry, easy to install and disassemble. The hatch is to add an extra red storage bag for fishing gear and other items. Helps reduce UV damage to your boat and minimize light entering your boat.