Leviton 13180-U (25 Pack) Slide-on Non-shunted T8/T12 Fluorescent Lamp Holder

Leviton 13180-U is a slide-on, non-shunted, medium base bi-pin, self-aligning, straight-in, double edge fluorescent lamp holder for T8 and T12 U-bend and linear lamps and programmed start ballast.  The tombstone has a medium bi-pin base with straight-in double edge contact, can be slide-on mounted, and made of durable, flame-resistant thermosetting urea.  Its power rating is 660 Watts and voltage rating is 600 Volts.  Sometimes called an unshunted socket.