Reliance Controls Corporation PB20 20-Amp NEMA 3R Power Inlet Box for Generators Up to 5,000 Running Watts,Gray Product Description Outdoor NEMA 3R power inlet box. May be installed outdoors up to 100 feet from a home's load center so your generator can be plugged in outside, away from open doors or windows. Designed to be hard-wired directly to Reliance transfer switches with building wire. Has four combination 1/2" and 3/4" knockouts (one on each side, bottom and back). 6" height x 4" width x 2.63" depth. UL listed. -- The Reliance Controls 20 Amp power inlet box is designed for outdoor use and can be hardwired directly to Reliance Controls transfer switches or panels, eliminating need for cords running through windows or doors. This rain-tight, rust-proof unit features zinc-plated steel construction. It includes an NEMA L14-20P inlet plug, six knockout holes, and push-in wire connections. The face of the box is removable for easy placement and wiring. It is cUL 1008 listed and covered by a 5-year warranty. Features For indoor or outdoor use with specific transfer switches, manual transfer panels and generator-ready load centers Outdoor, raintight NEMA 3R non-metallic power inlet box provides generous wiring space Maximum generator running watts: 5,000 Maximum generator input: 20A @ 125/250 VAC UL listed, exclusive patented design facilitates easy rough-in USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.