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Sylvania Dulux D/E Ecologic Dimmable T4 Compact Fluorescent Lamp
Model: SYL-P478309
Sylvania Dulux D/E Ecologic Dimmable T4 Compact Fluorescent LampThe Sylvania Dulux® D/E Ecologic® series is a family of dimmable T4 compact fluorescent lamps engineered for reliable, energy-efficient...
Sylvania
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$3.85
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Sylvania 21120 Dulux D Ecologic 13W CFL Lamp, 4100K
The Sylvania 21120 Dulux D Ecologic 13W CFL Lamp, 4100K is a T4X2 compact fluorescent lamp built on a 2-pin GX23-2 base for reliable retrofit performance in commercial and residential fixtures. Rated at 13-Watts, this lamp delivers 780-Lumens of output with an 82 CRI for accurate, natural-looking color rendering. Its Cool White 4100K color temperature provides crisp, clean illumination well suited for task lighting, hallways, and general-purpose fixtures where consistent light quality matters. As part of Sylvania's Dulux® D Ecologic® line, this lamp is engineered as an efficient alternative to standard incandescent sources while maintaining the compact double-tube form factor that fits existing GX23-2 socket fixtures without modification.
Key Features
- Wattage: 13-Watts for efficient, long-lasting illumination in compatible fixtures.
- Light Output: 780-Lumens of usable light for consistent brightness across the fixture's coverage area.
- Color Rendering: 82 CRI ensures colors appear accurate and natural under this lamp's output.
- Color Temperature: 4100K Cool White tone suited for task areas, offices, and general-purpose spaces.
- Base Type: 2-Pin GX23-2 base for direct compatibility with T4X2-style compact fluorescent fixtures.
- Form Factor: T4X2 compact double-tube design in the Dulux® D Ecologic® series for a compact fluorescent footprint.
- Color: White lamp finish for a clean, unobtrusive appearance in fixture housings.
Technical Specifications
- Product Type: Compact Fluorescent Lamp
- Wattage: 13W
- Lumens: 780
- CRI: 82
- Color Temperature: 4100K Cool White
- Base: 2-Pin GX23-2
- Lamp Form: T4X2 Compact Fluorescent
- Series: Dulux® D Ecologic®
Typical Applications
- Commercial Fixture Retrofits
- Office and Task Lighting
- Hallway and Corridor Fixtures
- General-Purpose Compact Fluorescent Fixtures
- Facilities Standardizing on GX23-2 Socket Lamps
Why Sylvania?
Sylvania's Dulux® D Ecologic® series pairs a compact T4X2 form factor with dependable 13-Watt output, 780-Lumens of light, and 82 CRI color accuracy in a familiar 2-Pin GX23-2 base. This makes the 21120 a straightforward, code-fitting replacement for facilities and contractors standardizing on GX23-2 compact fluorescent fixtures who need consistent Cool White 4100K performance.
"Manufacturer Resources
Product Specs
- list_batch:
- SYL-20260924
- Product Type:
- Compact Fluorescent Lamp
- Product Wattage:
- 13W
- Light Temperature:
- 4100K
- Bulb Base:
- GX23-2
- Lumens:
- 780
- CRI:
- 82
- Department:
- Electrical
- Product Group:
- Lighting
- Product Subgroup:
- Lamps & Bulbs
- Product Color:
- White
Sylvania 21120 – Frequently Asked Questions
1) Can I run the Sylvania 21120 13W twin-tube lamp on an electronic ballast, or does it need a magnetic one?
The 21120 is a pin-base compact fluorescent, not a self-ballasted screw-in lamp, so the fixture's existing ballast does the work. A 13W GX23-2 lamp has to be matched to a ballast rated for 13W twin-tube operation. Pull the ballast label in the fixture and confirm it lists 13W as a supported lamp before you standardize on this lamp across a building.
2) Is 4100K the right color for office and corridor fixtures, or should I use a warmer lamp?
At 4100K the 21120 reads as Cool White, a crisp neutral tone that suits task areas, offices, hallways and general-purpose fixtures. If you want a warmer, more residential look in lobbies or guest areas, 4100K will look noticeably cooler than a 2700K or 3000K lamp. The one thing to avoid is mixing color temperatures in the same corridor run, which makes the difference obvious.
3) How much light does the Sylvania 21120 13W CFL actually put out?
780 lumens from 13 watts, with an 82 CRI. The 82 CRI means colors render accurately enough for office work, retail corridors and signage areas where a low-CRI lamp would make finishes look flat. For a facility swapping existing 13W twin-tube lamps, the 780 lumen figure is the number to compare against what you are pulling out so light levels stay consistent across the run.
4) What does the T4X2 lamp shape on the Sylvania 21120 mean for fixture clearance?
T4X2 is the compact double-tube form: two T4 diameter tubes side by side rising from a single base. That is the shortest and narrowest of the common twin-tube shapes, which is why it is used in small downlights, wall sconces and stairwell fixtures. If the lamp you are replacing has four tubes or a quad arrangement, the 21120 is not the same shape and may not seat in the same reflector.
5) Can I standardize a whole building on the Sylvania 21120 for its GX23-2 fixtures?
That is what it is sold for. One part number covers 13W, 4100K, 82 CRI, 780 lumens on a GX23-2 base, so every GX23-2 socket in the building takes the same lamp and your stockroom carries one SKU. The condition is that each fixture's ballast is rated for 13W twin-tube lamps; buildings often have a mix of 13W, 18W and 26W pin-base fixtures that look similar from the ground.
6) What is the exact part number to order for the Sylvania Dulux D Ecologic 13W 4100K lamp?
Order Sylvania part number 21120. It is the Dulux D Ecologic T4X2 compact fluorescent, 13W, 4100K, GX23-2 base. Wattage, color temperature and base are all fixed on this part number, so there are no options to specify beyond quantity.
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Does the Sylvania 21120 come with a warranty?
Absolutely. The Sylvania 21120 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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