The LH1172 Leviton 13451-N is a G13 medium bipin socket / tombstone / lampholder for T8 tubular LED or fluorescent lamps. It is non-shunted and is straight insertion to accomodate even "U" shaped lamps. The Leviton 13451-N has "quick connects" for easy wiring and is supplied with a captive nut and screw for mounting.