Quality Material: built with ABS, these boat parts showcase reliable workmanship; The anti slip surface design enhances durability and resists corrosion, aging, and harsh UV rays; These hatches can withstand wear and tear; Giving you reliability in maintaining your marine equipment 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 with ease, making it a useful accessory for travel savvy individuals or those fond of outdoor activities Package Specifications: each package comes with 3 boat hatches and 18 stainless steel mounting screws; This allows convenient setup and installation, whether you place the hatch vertically or horizontally; This package provides enough quantity to cover your replacement needs and keep your marine equipment accessible and safe Size and Dimensions: the round marine hatch's external dimensions are about 9.8 inches/ 25 cm, while the internal dimensions are about 8 inches/ 20.3 cm; This size ensures reliable sealing performance, thanks to a rubber O ring inside that prevents water from entering your cabin, providing you with safety Easy and Convenient Operation: featuring a simple design, the sailboat accessories are easy to operate, just turn clockwise to close and counterclockwise to open; The detachable cover makes opening and closing the hatch easy; For the 8 inch marine inspection hatch cover, a 8.5 inch hole is recommended for installation Features: The boat storage hatch is suitable for multiple indoor and outdoor environments. Fit for use on various marine applications like ships, yachts, and RV decks. Each inspection hatch comes with pre drilled countersunk holes and mounting screws, allowing for a seamless installation process. Conveniently install these hatches on an interior or exterior flat deck surface to meet your maritime needs. Specifications: Material: ABS Color: white Size: Outside Dimension: about 9.8 inches/ 25 cm Inside Dimension: about 8 inches/ 20.3 cm Package includes: 3 x Inspection hatch 18 x Mounting screws Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Small items are included, please keep them away from little kids in case of choking risk.