UNIVERSAL COMPATIBILITY - The round electric cable hatch cover is suitable for 30 amp and 50 amp power cords and plugs, replacing any round hatch. SIMPLE INSTALLATION PROCESS - Use a hole saw to create a 3-2/3 inch hole in the wall. Insert the cord from the backside of the hatch, applying water-resistant materials such as butyl tape, putty tape, caulk, or silicone sealant at the flange back before installation. Secure the hatch in place by screwing in 3 bolts. HIGH-QUALITY PP MATERIAL - Engineered to endure the elements, our electrical hatches are constructed from premium PP material. This ensures durability, resistance to fading, and reliable performance while effectively covering your electrical cords. VERSATILE APPLICATION - Ideal for RVs, campers, and trailers, this power cable hatch safeguards connections with generators, plugs, sockets, and more, ensuring a dependable and secure power supply. Constructed from PP material, these hatches are water, acid, and UV-resistant. Color: Black Material: Plastic Package Contents: 2 x RV Hatch Covers, 6 x Screws Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement allowance is +/- 1-3 cm.