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GE 300 watt R40 reflector flood bulb frosted brass mogul screw base

GE

GE 21256 300R/3FL R40 Reflector Flood Spot Standard Bulb

SKU CH-J7V3-TCDBR

A 300 watt 130 volt incandescent flood bulb with an E39 mogul screw base and frosted R40 reflector

  • 300 watt output for bright flood illumination
  • 130 volt operation suits commercial supply lines
  • E39 mogul screw base fits large industrial sockets
  • R40 reflector shape directs light in a wide spot pattern

GE 21256 300W R40 Reflector Flood Spot

The GE 21256 is a 300 watt incandescent reflector flood spot bulb built with an R40 envelope and a frosted finish. It operates at 130 volts and uses a brass mogul screw E39 base for secure contact. This standard bulb suits fixtures that require high-output directional light in commercial or residential settings.

Fits E39 mogul-base sockets in R40-compatible

Installation requires a mogul screw E39 socket rated for 130 volt operation and a housing that accepts the R40 reflector diameter. The brass base resists corrosion in humid environments while the heat-resistant construction manages thermal load. The frosted reflector spreads illumination broadly, reducing the need for additional diffusion accessories.

How it compares

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

Price $12.99
Cheaper than about 65% of the 1,791 comparable items (median $17.99).

Specifications

No published specifications for this item yet.

Questions about this item

How long will the 300-watt filament last when the bulb runs continuously?

Incandescent reflectors of this wattage typically reach end-of-life after several hundred hours of non-stop operation; actual life varies with voltage stability and switching cycles.

How much heat does the R40 reflector throw into a room during all-day use?

Nearly all of the 300 watts becomes radiant heat; the frosted R40 face directs most of it forward, so the fixture and surroundings warm noticeably within minutes.

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