Sylvania 20721 Dulux D/E Ecolo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Sylvania 20721 Dulux D/E Ecologic 4-Pin Compact Fluorescent Lamp, 3000K

Sylvania 20721 Dulux D/E Ecologic 4-Pin Compact Fluorescent Lamp, 3000K

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Model: 20721

In Stock (leaves warehouse same day if ordered before 3pm ET)

$3.91
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Sylvania 20721 Dulux D/E Ecologic 4-Pin Compact Fluorescent Lamp, 3000K

The Sylvania 20721 (CF13DD/E/830/ECO) is a T4X2 compact fluorescent lamp built on the Dulux® D/E Ecologic® platform, engineered for reliable, energy-efficient replacement lighting in commercial and residential fixtures. This 4-pin lamp uses a G24q-1 base and delivers 900 lumens of output at a warm 3000K color temperature with an 82 CRI rating, giving accurate, comfortable color rendering for general-purpose applications. As an Ecologic® designated product, it is formulated to reduce environmental impact while maintaining the dependable performance Sylvania compact fluorescent lamps are known for in everyday commercial fixtures.

Key Features

  • Lamp Type: T4X2 compact fluorescent lamp in the Dulux® D/E Ecologic® series for dependable general lighting.
  • Base Configuration: 4-pin G24q-1 base for compatibility with standard 4-pin compact fluorescent fixtures and electronic ballasts.
  • Light Output: 900 lumens of usable light output suited to task and ambient lighting needs.
  • Color Temperature: 3000K warm white color rendering for inviting, comfortable illumination.
  • Color Rendering Index: 82 CRI for accurate, natural-looking color rendition.
  • Ecologic® Design: Formulated under the Ecologic® program, supporting reduced environmental impact without sacrificing lamp performance.

Technical Specifications

  • Product Type: Compact Fluorescent Lamp
  • Bulb Base: G24q-1 (4-Pin)
  • Color Temperature: 3000K
  • Lumens: 900 Lumens
  • CRI: 82
  • Series: Dulux® D/E Ecologic®

Typical Applications

  • Commercial Downlight and Recessed Fixtures
  • Hospitality and Retail Lighting
  • Office and Hallway General Illumination
  • Replacement Lamp for 4-Pin G24q-1 Fixtures
  • Energy-Conscious Lighting Retrofits

Why Sylvania?

Sylvania compact fluorescent lamps like the 20721 Dulux® D/E Ecologic® are engineered for consistent light output, accurate color rendering, and dependable operation in demanding commercial environments. With its 4-pin G24q-1 base, 3000K color temperature, and 82 CRI rating, this lamp is built to deliver reliable performance for electrical contractors and facility managers specifying replacement lighting. The Ecologic® designation reflects Sylvania's commitment to responsible lamp manufacturing, making it a practical choice for professionals seeking proven compact fluorescent performance.

Manufacturer Resources

Product Specs

list_batch:
SYL-20260928
Product Type:
Compact Fluorescent Lamp
Bulb Base:
G24q-1
Light Temperature:
3000K
Lumens:
900
CRI:
82
Series:
Dulux D/E Ecologic
Department:
Electrical
Product Group:
Lighting
Product Subgroup:
Lamps & Bulbs

Sylvania 20721 – Frequently Asked Questions

1) Will the Sylvania 20721 CFL fit my 4-pin G24q-1 socket, or do I need a G24d 2-pin lamp?
The Sylvania 20721 uses a 4-pin G24q-1 base, so it drops into G24q-1 sockets only. A 2-pin G24d socket runs on a magnetic ballast and the keyed pin pattern is different, so the 20721 will not seat in it. If the fixture socket has two pins, you need the 2-pin version of the lamp instead. The 4-pin arrangement means the lamp is operated by an electronic ballast in the fixture.
2) What wattage lamp does the Sylvania 20721 replace, and how much light does it put out?
The 20721 is the 13 watt Dulux D/E Ecologic double-twin-tube lamp, ordered under part number 20721 (factory code CF13DD/E/830/ECO), and it produces 900 lumens. Use it where the fixture label calls for a 13W 4-pin quad-tube CFL. Putting a higher-wattage lamp in that fixture is not a swap you can make, since the ballast is matched to the lamp wattage.
3) Is 3000K going to match the other CFL lamps already in my building?
At 3000K the 20721 is warm white, the same tone as a typical incandescent downlight. It will match other 830-series lamps (82 CRI, 3000K) but not 3500K neutral or 4100K cool white lamps in adjacent cans, where the color difference is obvious side by side. If a hallway or lobby is already running 3500K or 4100K, standardize the whole area rather than mixing.
4) Can I use the Sylvania 20721 CFL on a dimmer?
Only if the fixture has a dimming ballast. The 20721 is a 4-pin lamp, and with 4-pin CFLs the dimming is done by the electronic ballast, not the lamp. On a standard non-dimming ballast, feeding it through a wall dimmer will cause flicker or premature failure. Check the ballast label in the fixture for a dimming designation before specifying it on a dimmed circuit.
5) Is 82 CRI good enough for hospitality and retail spaces?
82 CRI covers general commercial work: corridors, offices, guest rooms, back-of-house, and most retail sales floors. Color rendering is accurate enough that skin tones and merchandise read naturally. For merchandising where color accuracy sells the product, such as apparel, cosmetics, or produce, specify a 90-plus CRI lamp instead.
6) What kind of fixtures is the Dulux D/E Ecologic 13W lamp normally used in?
It is a T4X2 double-twin-tube format, the compact shape built for recessed downlights and can fixtures. Common placements are commercial downlights, hospitality and retail lighting, and office or corridor general illumination. The short quad-tube envelope is what lets it fit inside a can where a straight twin-tube lamp would not.
7) What does the Ecologic designation on this Sylvania CFL actually mean for disposal?
Ecologic is Sylvania's designation for lamps formulated to reduce environmental impact. It does not make the lamp exempt from fluorescent handling practice: every CFL contains mercury, so spent lamps still go to lamp recycling rather than general waste. Facilities that already run a lamp recycling program for linear fluorescents handle these the same way.
How fast can I get the Sylvania 20721 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sylvania 20721 come with a warranty?
Absolutely. The Sylvania 20721 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sylvania 20721?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sylvania 20721 from ZenSupply?
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