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 - Follow these easy steps: Use a hole saw to create a 3-2/3Inch 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 their durability, resistance to fading, and -free performance while effectively covering your electrical cords.VERSATILE APPLICATION - Essential 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.Colour:BlackMaterial:PlasticPackage Contents:2 * RV Hatch Covers6 * screwsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.