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Clear tubular halogen bulb with metal caps at both ends

GE

GE 38311 ETT 1000w 120v R7s Halogen Bulb

SKU CH-W6WX-QJ84H

A 1000w 120v double-ended halogen bulb with an R7s base, rated for 70 hours of bright white light

  • 1000 W output for high-intensity projection
  • 120 V rating matches standard mains supply
  • R7s base fits compatible fixtures directly
  • 70-hour rated life for replacement planning
  • Halogen quartzline design gives whiter light than incandescent

GE ETT 1000w Halogen Projector Bulb

The GE 38311 is a double-ended quartzline halogen lamp rated at 1000 watts and 120 volts. It uses an R7s recessed single contact base and a CC-8 filament. This bulb is designed for projector and stage fixtures that require this specific base type and wattage. It is not suitable for standard household sockets or low-voltage track systems.

Thermal output and power draw

Operating at 1000 watts, the lamp produces significant heat and requires fixtures rated for this load with adequate ventilation. The quartz envelope reaches very high temperatures during normal use and must not be touched with bare hands. Power consumption is fixed at the rated wattage when driven at 120 volts, with no dimming circuitry included in the bulb itself.

Rated life and handling

The manufacturer rates the bulb life at 70 hours under specified conditions. Oil contamination from skin contact can create hot spots on the quartz and shorten this lifespan, so clean gloves are recommended during installation. No additional accessories, software or adapters are supplied with the lamp.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 77% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameGE

Questions about this item

How do I install the GE 38311 ETT halogen bulb with its R7s base without damaging the quartz envelope?

Hold the bulb only by its ceramic ends, never touch the quartz tube with bare fingers, and press each end firmly into the spring-loaded R7s sockets until the recessed single contacts seat fully.

What maintenance does this 1000w 120v halogen bulb require before its 70-hour rated life ends?

No scheduled maintenance is needed; simply replace the bulb once light output drops or the CC-8 filament fails after roughly 70 hours of operation.

What is the first limitation I will hit when running this GE ETT projector bulb continuously at full power?

The 70-hour rated life is the primary limit; prolonged use at 1000 watts will exhaust the filament within that period, requiring bulb replacement.

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