MICTUNING 5-in-1 AC Port Plug 20A 125V, RV Shore Power Inlet Plug with T-Blade Adapter, Integrated 12 AWG Extension Cord, Water-Resistant Cap, Electrical Receptacle for Trailer Truck Boat. Weatherproof Cap – The AC port equipped with a watertight cap to protect against snow, ice, and rain, ensuring durability and electrical safety.
eBay