They hold light bulbs and make electrical contact to provide a bulb ... Miscellaneous fluorescent lampholders are typically plug-in products with a circle-line lamp base and 4-pin contacts.
Description: Linear Fluorescent Lampholder. Features: - Fits: T8 lamps - Medium bi-pin - 20 gauge mounting slots - Rated Wattage/Volts: 660W/660V - Color: White - UL and CSA marked body ...