30A, Resin Power Inlet Box, Use A Power Inlet Box When You Need To Plug In Your Generator Outdoors To Connect To A Transfer Switch Indoors, Mount This Non- Metallic Power Inlet Box On The Exterior Of The House & Will Run Wire Through The Wall Over To The Transfer Switch, Rated At 30A For Generators Up To 8000W, NEMA 3R, Rated Non-Metallic Enclosure Is Made From Durable, Glass, Filled Nylon & Includes A 30A, 125/250V Male Inlet In NEMA Configuration L14, 30 On Bottom, Retains A Rain Tight Rating When Cord Is Connected, Required By Most Inspectors, Works With Any Transfer Switch Rated At 30A, Does Not Include A Flip Lid, UL Listed.