ASD offers UL 50 NEMA 1 and NEMA 3R type junction boxes that are available in both galvanized steel and ANSI 61 Gray. Additionally, ASD builds tap boxes that are service entrance rated, featuring utility lockable hasps. ASD also offers NEMA 3R generator tap boxes ranging from 400A-4000A with quick connect cam locks and drop doors for easy access in the most critical of situations.