The Nema 3R Weatherproof Outdoor Use Power Inlet Box For 125/250 Volt, 12500 ??[Safety Certification]: Marsflex SS2-50P 50Amp generator inlet box is ETL Listed for peace of mind. It's rated for 125/250V, 12500W, and 50 Amps, ensuring safe and reliable power transfer. Compatible with all 4-prong NEMA SS2-50R generator cords, it's designed to meet your power needs with confidence. ?[Upgrade Design]: Benefit from a spatial interval measuring 6.1 * 4.1 * 3.1 inches, allowing for near wiring and superior heat dissipation, ensuring a longer service life The removable front panel facilities are easy to install, while the 1.2-inch combination hole with 4-way connection points (left, right, bottom, real) offers flexibility in wiring to switches and electrical panels from multiple directions ?[Excellent Protection Performance]: Marsflex Generator Power Inlet Box is designed to be sturdy and durable, and is certified as an excellent NEMA 3R protection level Power Inlet Box, offering unparalled resistance to wind, rain, and rust It flip design, enhanced with weather proofing foam, shields against dust and humidity, providing optimal protection in any weather scenario ??[Easy to Install]: Our 30Amp Generator Inlet Box has reserved holes for you to allow wires to pass through. During installation, you do not need to manually make holes, just remove the rubber plug during installation, and you do not need to manually drill holes to avoid damage to the inlet box due to drilling failure, making it easy for you to install and use. ?[Green Safety Light]: Experience peace of mind with the clear green warning light adorning the flip cover. This highly visible indicator illuminates upon successful power connection, offering enhanced visibility, especially in low-light conditions. With improved performance and heightened security, rest assured that your power supply is always reliable.