Review on RVGUARD 30 Amp 125 Volt RV Power Outlet Box - Weatherproof, Lockable & ETL Listed by Joel Mosqueda

I was expecting this box to have the knockout hole typical of other electrical boxes - a metal circle in the knockout area with 2-3 welds holding it in place. This makes it easier to remove the knockout required. However, the section was solid metal and I had to drill a few holes in it and then use a round metal file to make a hole for the wires to run through. Not being an electrician and not owning a knockout tool I must have been naive. Also, the ground wire was too short. Everything works in the end, but it's cumbersome to install.