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Clear T3 halogen tube with double-ended R7s base, 78 mm long

Satco

Satco 250W T3 Clear Double Ended Halogen Bulb 4500L 2900K 1500h

SKU CH-KGR5-E9HFM

A 250 watt clear T3 halogen bulb with double-ended R7s base, 4500 lumens, 2900K warm white light, 100 CRI and 1500 hour rated life

  • Power rating250
  • Light output4500
  • Color temperature2900K
  • Lifespan (hours)1500
  • Color rendering100
  • Product typeHalogen Bulbs
  • Bright 4500 lumen output for large-area lighting
  • Warm 2900K colour temperature suits living spaces
  • Perfect 100 CRI renders colours accurately
  • Double-ended R7s base fits compatible fixtures
  • 1500-hour rated life reduces replacement frequency

Bright 250 W halogen for high-output fixtures

This 250 watt double-ended halogen bulb delivers 4500 lumens of warm white light at 2900 K. It suits residential or commercial fixtures that need strong, accurate colour rendering with a CRI of 100. The clear T3 tube measures 78 mm and runs on 120 V mains supply. Average rated life is 1500 hours.

Match the R7s base and 250 W rating exactly

The lamp uses an R7s recessed single-contact base, so the fixture must accept that specific connector. Voltage is fixed at 120 V and wattage at 250 W; substituting a different wattage or base type will prevent proper operation. Confirm the fixture is rated for 250 W halogen before purchase.

Simple two-pin insertion, avoid skin contact

Installation requires sliding the double-ended bulb into the R7s sockets until the contacts seat firmly. Wear clean gloves or use a cloth; oils from fingers create hot spots that shorten the 1500-hour life. Ensure the fixture is cool and power is off before fitting the 78 mm tube.

How it compares

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

Price $4.99
Cheaper than about 92% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSATCO
Product typeHalogen Bulbs
Display
Light output4500
Power
Power rating250
More details
Color temperature2900K
Lifespan (hours)1500
Color rendering100

Questions about this item

How bright will the 4500-lumen output actually look in a typical fixture?

At 4500 lumens and a warm 2900 K colour temperature the bulb delivers a strong, warm-white glow comparable to a high-output halogen flood, suitable for large work areas or high-ceiling spaces.

What does the R7s double-ended base mean for voltage and dimming?

The R7s base is designed for 120-volt circuits and works with standard leading-edge dimmers rated for the 250-watt load.

Will the 78 mm length fit my existing R7s socket?

The lamp measures 78 mm overall, so it fits any standard R7s recessed single-contact socket that accepts a 78 mm T3 halogen capsule.

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