The LH0521 Leviton 13653-WP (often referenced as 3653-WP) is a low-profile, non-shunted linear fluorescent lampholder designed for medium bi-pin T8 and T12 lamps. Constructed from white thermoplastic with copper-alloy contacts, it is rated for up to 660W and 600V. It features a Lamp-Lock mechanism to securely hold the bulb in place, preventing accidental displacement. Mounting options include snap-in or slide-on attachment for 22-25 gauge panels, and it incorporates a panel locator post for precise alignment during installation. Standard 18 AWG solid Quickwire termination allows simple, tool-free wiring.