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Small transparent tubular bulb with intermediate screw base, 25 watt incandescent appliance lamp

GE Lighting

GE Lighting 25W Microwave Bulb S4720

SKU CH-REWF-CKEEK

A 25-watt incandescent appliance bulb with a T7 shape and intermediate screw base, rated for 120 volts and 1000-hour life

  • Power rating25
  • Sold as1
  • Product typeOthers
  • Product colorTransparent
  • Number of items1
  • Designed for high and low temperatures
  • Rugged filament resists vibration in appliances
  • 25 watt incandescent provides clear interior light
  • 120 volt intermediate base fits microwaves and ovens
  • Rated 1000 hour life for lasting performance

Microwave appliance bulb

The GE Lighting S4720 is a 25-watt incandescent appliance bulb built for microwave ovens, refrigerators and standard ovens. Its T7 shape and intermediate screw base fit the dedicated sockets found in those appliances. The transparent glass envelope lets the full light output reach the interior. It operates on a 120-volt supply.

Thermal and vibration resistance

The bulb is engineered to withstand the high and low temperature cycles common in cooking and cooling appliances. A rugged C-7A filament resists vibration caused by turntable motors or compressor movement. Rated life is 1000 hours under normal appliance use. Power draw remains a steady 25 watts during operation.

Intermediate base mounting

The intermediate screw base threads directly into the appliance socket without adapters. Transparent glass allows easy visual inspection for filament failure. Single-unit packaging provides one replacement bulb per purchase. The design suits any appliance that specifies a 25-watt T7 intermediate-base lamp.

How it compares

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

Price $2.99
Cheaper than about 96% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameG E Lighting
Product typeOthers
Product colorTransparent
Power
Power rating25
In the box
Number of items1

Questions about this item

How do I install the T7 intermediate-base bulb in my microwave?

Unplug the appliance, let it cool, then screw the bulb into the intermediate base socket until it seats firmly; forcing it cross-threaded is the common error.

What maintenance or replacement will this 25-watt incandescent appliance bulb need later?

The C-7A filament is rated for about 1000 hours, so plan to replace the bulb once it burns out; no other servicing is required.

What limit appears first during sustained use in a high-temperature microwave?

The 1000-hour filament life is the limiting factor; continuous heat and vibration accelerate end-of-life rather than causing an immediate thermal shutdown.

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