Quartz Lamp, Fostoria, Size- 3/8 IN, 208 V, Frequency Rating- 50/60 HZ, 2500 WTT, Style- Coiled Element with Sealed Porcelain End Caps, Insert Length- 28-11/16 IN, Housing Quartz. For Use With 342/343 Series Mul-T-Mount Electric Infrared Heater, MM-33A Mitey Midget Electric Infrared Heater