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Single-tube compact fluorescent bulb with two-pin GX23 base

SYLVANIA

SYLVANIA 21133 CF13DS/830/ECO 13 W 3000 K 800 lm GX23 fluorescent standard bulb

SKU CH-DWCQ-ZHKBN

13 W GX23-base compact fluorescent bulb delivers 800 lm at 3000 K with 82 CRI and 10 000-hour rated life

  • Power rating13 W
  • Light output800
  • Lifespan (hours)10000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • 13 W delivers 800 lm of warm white light
  • 3000 K colour temperature suits living spaces
  • GX23 two-pin base fits compatible fixtures
  • 10000-hour rated life reduces replacement frequency
  • CRI 82 renders colours naturally indoors

Sylvania 13 W GX23 fluorescent bulb

The Sylvania 21133 is a 13 W compact fluorescent lamp with a GX23 two-pin base. It produces 800 lumens at a 3000 K colour temperature and has a rated life of 10000 hours.

Check fixture base and ballast compatibility

Verify that the existing fitting accepts a GX23 two-pin base and that the ballast is rated for a 13 W single-tube lamp. The bulb measures 23 mm in tube diameter and requires a compatible starter circuit.

Suits direct replacement in downlights

This lamp suits users needing a direct 13 W plug-in replacement with warm white output. Buyers who want higher lumen output, a different colour temperature or a four-pin dimmable base should look at other models.

How it compares

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

Price $2.99
Cheaper than about 96% of the 1,791 comparable items (median $17.99).
Power rating 13 W
Lower than about 90% of the 162 comparable items (median 70 W).

Specifications

Product
Brand nameSylvania
Product typeFluorescent Bulbs
Display
Light output800
Power
Power rating13 W
More details
Lifespan (hours)10000
Color rendering82

Questions about this item

Does the Sylvania 21133 CF13DS/830/ECO bulb come with a ballast or must one be purchased separately?

The bulb has a 2-pin GX23 base and requires an external magnetic ballast in the fixture; no ballast is included in the box.

The model code shows 830 and 13 W — what do those figures tell me about this specific version?

830 means a colour rendering index of 82 at 3000 K colour temperature, and 13 W is the power draw of this single-tube Dulux S compact fluorescent.

What does the 800 lumen rating mean for actual brightness in a desk lamp?

At 13 W the bulb produces 800 lumens of 3000 K light with a CRI of 82, providing warm-white output suitable for task lighting.

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