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Triple-tube compact fluorescent bulb with four-pin base

SYLVANIA

SYLVANIA 20888 42 W 3000 K 12000 h 4-pin triple-tube fluorescent bulb

SKU CH-STQ6-1V6M5

Triple-tube compact fluorescent lamp with a GX24Q-4 base, 42 W power draw, 3000 K warm-white output, 82 CRI and 12 000-hour rated life

  • Power rating42
  • Color temperature3000K
  • Lifespan (hours)12000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • Warm 3000 K light for comfortable indoor spaces
  • 42 W fluorescent output with 82 CRI colour accuracy
  • Triple-tube 4-pin design fits GX24Q-4 fixtures
  • 12 000-hour rated life reduces replacement frequency
  • New SYLVANIA 20888 bulb ready for general lighting

SYLVANIA 20888 42 W Fluorescent Bulb

This SYLVANIA 20888 is a 42 W triple-tube compact fluorescent bulb with a GX24Q-4 four-pin base. It produces a 3000 K warm white light and has a rated life of 12000 hours. The colour rendering index is 82. It is designed for general and consumer lighting fixtures that accept this specific base type.

Suits Fixtures With GX24Q-4 Sockets

Buyers replacing a CF42DT/E/IN/830 lamp in compatible downlights, wall sconces or surface-mounted luminaires will find this a direct match. The four-pin base means the fixture must provide the correct electronic ballast and socket keying. It will not work in two-pin magnetic ballast sockets, Edison screw bases or any fixture lacking the GX24Q-4 interface.

Simple Four-Pin Plug-In Installation

Installation requires aligning the keyed GX24Q-4 pins with the socket and pressing firmly until seated; no tools are needed. Ensure the power is off and the existing ballast is compatible with 42 W triple-tube lamps. A common issue is forcing the bulb into a two-pin or differently keyed four-pin socket, which damages the base or prevents proper electrical contact.

How it compares

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

Price $5.99
Cheaper than about 90% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSylvania
Product typeFluorescent Bulbs
Power
Power rating42
More details
Color temperature3000K
Lifespan (hours)12000
Color rendering82

Questions about this item

What fixture base is required for the GX24Q-4 4-pin triple-tube design?

The bulb fits a GX24Q-4 4-pin socket designed for triple-tube compact fluorescent lamps. The fixture must accept this specific base type for proper electrical contact.

Will the 42-watt rating and 3000K output work with an older magnetic ballast?

No, the 42-watt triple-tube lamp requires an electronic ballast matched to its wattage. A magnetic ballast will not start or run the bulb correctly.

How can I confirm the 12000-hour rated life and 82 CRI are being delivered after installation?

Verify the lamp starts instantly without flicker and maintains steady 3000K light. Track operating hours; a significant drop in brightness before 12000 hours suggests a ballast or supply issue.

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