EATON 2500W 660W 600V/AC Recessed Double-Contact Fluorescent Lampholder Fluorescent Lampholder Recessed Double Contact Molded For replacement use in fluorescent lighting fixtures as well as enclosed outdoor signs Recessed double-contact (2500, 2501) lampholders can be used for flush or surface mounting Plunger lampholders feature non-sticking, spring-loaded plunger to hold lamp securely Captive pal nut for easy mounting