The LH0018 Vossloh Schwabe 108661 is a tombstone, lamp holder socket that is suitable for T4-T5 fluorescent lamps. It has a rotary locking mechanism and is rated for 120w-600v. It is for T5 or T4 lamps that all have a G5 base. The 108661 LH0018 is an un-shunted socket for rapid start ...