SING F LTD 8" White Round Boat Deck Inspection Hatch with Removable Cover Fits 204mm Opening Marine RV Access

["Deck Dimensions: 8 inches: Opening size 8.25 inches (210 mm), outer diameter 9.7 inches (247 mm), inner diameter 8 inches (204 mm). Thread size 200 mm.","Made of ABS plastic, these round deck covers are durable, anti-aging, and UV resistant, ensuring reliable performance even in marine environments.","The O-ring seal design provides a tight and secure seal, protecting the interior from water, dust, and other external factors.","Features a robust, non-slip surface and a 180° opening hatch for easy horizontal and vertical installation, ensuring ease of use.","Versatile Applications: Ideal for boats and yachts, they can serve as access hatches and deck openings, power cable storage channels, or efficient ventilation vents."]