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Single white fluorescent tube with 4-pin 2G11 base

SYLVANIA

SYLVANIA 20584 FT40DL/830/RS 40W 3000K 4-Pin Fluorescent Bulb

SKU CH-H2EW-V3ZY8

40 W T5 single-tube fluorescent lamp with 2G11 4-pin base, 3000 K colour temperature, 82 CRI and 20 000-hour rated life

  • Power rating40 W
  • Lifespan (hours)20000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • 40 W lamp delivers 20 000 hours of service life
  • 3 000 K colour temperature provides warm white illumination
  • 82 CRI renders colours accurately for everyday tasks
  • 2G11 4-pin base fits compatible rapid-start fixtures
  • Single T5 tube design suits compact fluorescent applications

Sylvania 40 W single-tube compact fluorescent

This Sylvania 20584 lamp is a 40-watt T5 single tube with a 2G11 four-pin base, designed for rapid-start ballasts in commercial or residential fixtures. It produces a warm 3000 K colour temperature and carries an 82 CRI rating for acceptable colour rendering. The rated life is 20 000 hours under standard rapid-start operation.

Suitable for recessed

The bulb fits luminaires that accept a 2G11 base and are wired for rapid-start control gear; it will not operate on instant-start or preheat ballasts. Installers who need a different wattage, colour temperature or base type should select an alternative lamp. Buyers seeking LED replacements or integrated driver solutions must look elsewhere.

2G11 four-pin base with rapid-start requirement

The lamp only works in fixtures wired for a 2G11 base with a compatible rapid-start ballast. Verify the ballast type before purchase to ensure reliable starting and full rated life.

How it compares

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

Price $19.99
Typical for this category: the median of 1,791 items is $17.99.
Power rating 40 W
Lower than about 61% of the 162 comparable items (median 70 W).

Specifications

Product
Brand nameSylvania
Product typeFluorescent Bulbs
Power
Power rating40 W
More details
Lifespan (hours)20000
Color rendering82

Questions about this item

How much light does the 40W rating actually produce in a real fitting?

The lamp draws 40 watts and is rated for 20000 hours of operation at that power level.

What does the 4-pin 2G11 base limit in practice?

The 2G11 4-pin base requires a compatible rapid-start ballast; it will not work on instant-start or preheat gear.

What clearance does the single T5 tube need to fit and mount?

The single T5 tube fits a 2G11 4-pin socket; allow enough length for the straight tube plus the base pins.

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