Circline Black Light Bulbs
Circline black light bulbs are the round bulbs that are used in many types of fixtures. These are considered the standard version used for decades. This is the FC8T9 version creating that special black lighting effect. The lamp is 8 inches in diameter and can be used anywhere you use a standard FC8T9. Many newer fixtures use the more popular linear type lamps, but many still use the FC8T9 circline black light bulbs that you see here. - 4 pin connection. - Round shape. - Operates on a magnetic ballast. - Black light blue color (BLB). - 8 inch diameter.