Buy 4 Pin - Double Tube (quad) Light bulbs from Superior Lighting at wholesale prices. 4 Pin - Double Tube (quad) bulbs also known as PL bulbs or compact fluorescent pin bulbs can be used almost anywhere especially in outdoor fixtures, indoor and outdoor sconces in condo associations and restaurants, compact fluorescent recessed lights in office buildings and shopping mall light bulbs and furniture store lighting.

4 Pin - Double Tube (quad) Compact Fluorescent