Review on 🔌 High-Quality 50 Amp RV Power Outlet Box | Weatherproof Enclosed NEMA 14-50R Receptacle Panel - Ideal for RVs, Trailers, Motorhomes, Electric Cars, and Generators by Michael Shim

Well, everyone is right about the knockout option mentioned in the EASY CONNECTION AND EASY INSTALLATION section. I used a hammer and screwdriver to knock out the bottom hole. It's not easy, you have to be patient. I don't know why they have an access hole at the top as nothing fits that hole and who would want to use it especially when it's raining? Connected to the sub-panel to power the generator's inverter during a power outage. Make sure you know what you are doing and only connect the device after the main switch has been turned off and the house has been unplugged. Overall, this is a solid box that gets the job done.