All ParkPower inlets feature a robust construction and are corrosion resistant for use in harsh environments. All ParkPower inlets feature UV stabilized glass-filled polyester construction for long-lasting strength. Technical features are designed to make them easy to install and a pleasure to use for the RV professional or the casual RV enthusiast. Features: UL and CSA Approved. NEMA SS2-50R Easy Lock system quickly locks the cord set to the inlet in just 1/8 of a turn Rear enclosure is glass-filled polyester for strength Convenient cover design remains open until a soft touch is applied | Marinco 50A 125/250V Standard RV Power Inlet, Black