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The G E LIGHTING 37770 is a 250-watt, 120-volt clear infrared heat reflector bulb designed for applications where both radiant heat and visible light output are required. The R40 reflector shape focuses output directionally, making it effective in heat lamp fixtures, food-warming stations, and industrial spot-heating setups. Rated at 2,200 lumens with a maximum overall length of 6.5625 inches and fitted with a standard medium base, this bulb is a direct drop-in for compatible R40 lamp sockets. It is typically installed by HVAC technicians, commercial kitchen maintenance personnel, or facilities electricians.
This bulb is commonly used in commercial food service heat lamp assemblies, bathroom heat lamp fixtures, animal husbandry heating setups, and light industrial warming applications. The clear finish allows the full radiant heat output to pass through without diffusion. With a 5,000-hour rated life, it is suited for continuous-duty or high-cycle environments where frequent relamping is a cost concern. It ships in a package quantity of six units.
Designed as an OEM-style replacement for standard R40 medium-base heat lamp fixtures rated for 250-watt, 120-volt incandescent infrared bulbs.
Installation should be performed by a qualified electrician or maintenance technician. Always shut off power to the fixture at the circuit breaker before removing or installing the bulb. Confirm the fixture is rated for 250 watts at 120 volts before installation, as undersized sockets or wiring present a fire risk. Allow the fixture to cool completely before handling a spent bulb, as infrared heat lamps retain high surface temperatures after shutoff.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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