Use a power inlet box when you need to plug in your generator outdoors * Made of nema 3r-rated non-metallic resin * Power cord connect 7500-watt maximum generator to a nema configuration l14-30 inlet box * Compatible with generators equipped with 30-amp outlets including model numbers: gp3250, lp3250, xg4000, xp4000 and much more * Comes with a 2-year limited warranty