Miniature bi-pin fluorescent lampholders are dedicated for T-5 lamps with a slender 5/8 inch (16 mm) diameter. Available shunted (Cat. No. 23654) and non-shunted (Cat. No. 13654). User-friendly benefits include snap-in or slide-on mounting options and a 4-position, positive-stop lamp-lock socket that makes it easy to relamp in service. Low profile snap-in or slide-on with lamp-lock and locator pin. Internal shunt connection for use with instant-start ballasts. Back of lampholder is stamped S to identify shunt and help prevent improper applications.