The 6347 50 A 1/0 V Rain tight Power Inlet Box installs on the exterior of your house or building and is hard wired to your transfer switch. Use a power inlet box when you need to plug in your generator outdoors to connect to a transfer switch indoors. This power inlet box is made of NEMA 3R-rated corrosion-resistant aluminum which provides long life, can be painted and has a spring loaded flip lid cover. During a power outage you connect your 100 W maximum generator to this NEMA configuration CS6365 power inlet box with a power cord. Power inlet box is compatible with generators with 50 A outlets including model numbers: GP30, LP30, XG4000, XP4000, GP5500, GP6500E, GP7500E, XG6500, XG7000E, XG8000E, XP6500E and XP8000E. Also combatable with transfer switches model numbers: 66, 67, 68, 69 and 6382. The 6347 50 A 1/0 V Rain tight Power Inlet Box is UL Listed, made in the USA, backed by a 2-year limited warranty and measures 5 inch by 5 inch by 7 inch and weighs 3 pounds. power inlet boxes should be installed by a professional electrician familiar with electrical wiring and code. manufactures the widest range of power products in the marketplace including portable, RV, residential, commercial and industrial generators.