2156

Extra long life: Intergral series resistor in base reduces light output by about 40% but increases lamp life more than ten times. Designed to give adequate light when installed behind a louver plate or indicator jewel. Mounts in standard wall box. Plate mounting is 2 3/8' and 3 13/16''. UL listed for 120 VAC circuits. Plate not included. 4 WATT.