This AC WORKS brand transfer switch inlet box is built with heavy‑duty thick metal to withstand outdoor exposure, impacts, chemicals, and harsh weather conditions. It features a NEMA L5‑30P 30‑amp 125‑volt 3‑prong locking inlet, providing a secure and reliable power entry point for generators, transfer switches, and temporary or emergency power systems.The enclosure includes multiple conduit knockout options, including two combination ½" / ¾" knockouts and five replaceable knockouts with included plates offering ½", ¾", and 1½" configurations. The top access port accepts standard conduit hub accessories, and GE and Midwest brand raintight hubs are confirmed to fit.This inlet box is NEMA 3R rated, offering protection against rain, sleet, snow, and ice formation. It is cETLus certified for safety and compliance.Your purchase includes a 5‑year limited warranty.