GenTran 63652 50 Amp Aluminum Power Inlet Box for up to 12,500-Watt Generators (Discontinued by Manufacturer) Avoid running generator cord through a door or window with this power inlet box Aluminum construction won't rust Rain tight even when cord is connected since inlet is underneath For generators up to 12,500-watts; 50-amps 60-by-5-by-5-inches; UL Listed