GenTran 14200 20-Amp Aluminum Power Inlet Box for up to 5000-Watt Generators 20-Amp aluminum power inlet box for up to 5000-watt generators Avoid running generator cord through a door or window with this power inlet box Aluminum construction won't rust; UL listed; made in USA Rain tight even when cord is connected since inlet is underneath Measures 9-inches in length by 6-inches in width by 5-inches in height