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Ten compact fluorescent bulbs, triple-tube design, white finish, GX24q-4 base

SYLVANIA

SYLVANIA 21103 38 W Compact Fluorescent Bulb 3000 K 2450 lm GX24q-4 10 Pack

SKU CH-M9MQ-J4VB7

A pack of ten 38 W compact fluorescent bulbs delivering 2450 lumens of 3000 K light with an 18000-hour rated life and GX24q-4 base

  • TypeCompact Fluorescent Bulbs
  • Wattage38
  • Natural white glow at 3000 K colour temperature
  • Bright 2450 lumen output from 38 W power draw
  • 18000 hour rated life reduces replacement frequency
  • High 82 CRI renders colours accurately
  • GX24q-4 base fits compatible fixtures directly

Product Identity

This pack contains ten Sylvania 21103 compact fluorescent bulbs rated at 38 watts each. They deliver 2450 lumens at a 3000 K colour temperature with a CRI of 82 and fit GX24q-4 sockets. The lamps suit commercial or residential fixtures that require this specific base and wattage. They are not for buyers needing dimmable LED replacements or alternative base types.

Thermals Noise Power

Each lamp draws 38 watts and uses an electronic rapid-start ballast for quick ignition with minimal flicker. The compact fluorescent design runs cooler than equivalent incandescent sources while producing 2450 lumens. Operation is silent, with no audible hum from the electronic gear. The average rated life is 18000 hours under normal switching cycles.

Included Extras

The package supplies ten identical bulbs in a single box, simplifying group relamping projects and ensuring colour consistency across all fixtures. No additional drivers, adapters or software are bundled. The multi-lamp pack reduces per-unit handling and storage effort for facility managers. No accessories beyond the lamps themselves are included.

Highlights

  • Natural white glow at 3000 K colour temperature
  • Bright 2450 lumen output from 38 W power draw
  • 18000 hour rated life reduces replacement frequency
  • High 82 CRI renders colours accurately
  • GX24q-4 base fits compatible fixtures directly

Specifications

BrandSylvania
TypeCompact Fluorescent Bulbs
Wattage38

Questions about this item

How do I install the GX24q-4 base bulbs and what step is often missed?

Align the four pins with the socket slots, push straight in until the base seats fully, then rotate a quarter-turn clockwise to lock; the quarter-turn is the step most people forget.

What maintenance will the 18000-hour rated bulbs need later?

No routine maintenance is required; when light output drops noticeably after roughly 18000 hours, replace all ten bulbs to maintain consistent 3000 K colour and 2450 lumen output.

What limit appears first during continuous operation of the 38 W rapid-start lamps?

The 18000-hour average lifetime is the first limit; extended runs accelerate lumen depreciation and end-of-life darkening before any other component fails.

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