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Transparent triple-tube fluorescent bulb with 4-pin base

SYLVANIA

SYLVANIA 20890 CF42DT/E/IN/841 42 W Triple Tube 4 Pin Base Compact Fluorescent Bulb

SKU CH-VM2A-G5KB4

42-watt triple-tube compact fluorescent bulb with GX24Q-4 base, 4100K colour temperature, 12000-hour rated life and 82 CRI

  • Power rating42
  • Color temperature4100K
  • Lifespan (hours)12000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • Product colorTransparent
  • 4100K cool-white light suits task areas
  • 82 CRI renders colours accurately
  • 12000-hour rated life reduces relamping
  • 42 W triple-tube design fits GX24Q-4 fixtures
  • Transparent glass envelope maximises light output

Right part for GX24Q-4 fixtures

This Sylvania 20890 is a 42 watt triple tube compact fluorescent bulb built for a GX24Q-4 four-pin base. It suits general and consumer lighting fixtures that accept this specific socket. Buyers whose luminaires require a different pin layout or wattage cannot use this lamp.

4100K colour temperature and 82 CRI

The lamp delivers a neutral white 4100K output with a colour rendering index of 82. This combination determines whether the light quality matches the space. Installations that demand warmer tones, cooler daylight appearance or higher colour fidelity will need a different specification.

Simple plug-in replacement

Installation consists of aligning the four pins with the GX24Q-4 socket and pressing until seated; no wiring or tools are required. The most common issue is forcing the base into an incompatible socket such as a GX24Q-3 or two-pin holder, which damages the pins and prevents operation.

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 nameSylvania
Product typeFluorescent Bulbs
Product colorTransparent
Power
Power rating42
More details
Color temperature4100K
Lifespan (hours)12000
Color rendering82

Questions about this item

How bright will the 42 W rating actually look in a typical fixture?

The 42 watt triple tube design delivers cool white light at 4100K with a CRI of 82, suitable for general indoor lighting where accurate colour rendering matters.

What does the GX24Q-4 4 pin base limit me to when choosing a ballast?

The GX24Q-4 base requires a compatible electronic ballast wired for 4 pin compact fluorescent lamps; it will not work with magnetic ballasts or 2 pin sockets.

Will the triple tube shape fit inside a standard recessed can or enclosed shade?

The triple tube CF42DT/E/IN/841 measures 24 mm tube diameter and is designed for fixtures that accept GX24Q-4 base lamps; check your housing clearance before installing.

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