Premium Material: The Boat Hatch is made from premium pp, inspection hatch is designed to withstand the harsh marine environment, ensuring long term durability and reliability Convenient Access: Equipped with two rotatable handles, this deck hatch offers easy access to the compartment below, making inspections and maintenance tasks more efficient Reinforced Design: Non slip surface, strong stability, good sealing, leakproof, and long service life Waterproof: Engineered with exceptional protect properties, this product effectively prevents rainwater and seawater from seeping into the cabin Easy Installation: Round Inspection Hatch Deck Plate with an outer diameter of 28.2cm/11.10inch and an inner diameter of 20.5cm/8.07inch, this hatch cover fits perfectly into a cut out size of 23.5cm/9.25inch, allowing for straightforward installation on your vessel Size Chart: Outer diameter 28.2cm/11.10inch Inner diameter 20.5cm/8.07inch Hole size 23.5cm/9.25inch Package Includes: 1Boat Deck Plate Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.