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Sylvania Dulux Single Ecologic T4 Compact Fluorescent Lamp
Model: SYL-P478322
"Sylvania Dulux Single Ecologic T4 Compact Fluorescent LampThe Sylvania Dulux® Single Ecologic® T4 compact fluorescent lamp family delivers reliable, energy-efficient general lighting for commercial...
Sylvania
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$3.77
Sylvania 21273 CF9DS/835/ECO 9W T4 U-Tube Compact Fluorescent Lamp, 3500K
The Sylvania 21273 CF9DS/835/ECO is a 9W T4 U-tube compact fluorescent lamp built on Sylvania's Dulux® S Ecologic® platform. Designed for use in fixtures that accept a 2-pin G23 base, this lamp delivers 580 lumens of output at a neutral 3500K color temperature with an 82 CRI rating for accurate, natural-looking color rendering. It is a compact, energy-efficient alternative to incandescent lamps in commercial and residential fixtures that call for a G23-base compact fluorescent source.
Key Features
- Lamp Type: T4 S U-tube compact fluorescent lamp construction for a compact footprint in space-constrained fixtures.
- Base: 2-pin G23 base for direct compatibility with fixtures designed for this compact fluorescent lamp format.
- Light Output: 580 lumens delivers dependable, consistent illumination for task and ambient lighting applications.
- Color Temperature: 3500K provides a neutral white light suited to general-purpose commercial and residential lighting.
- Color Rendering: 82 CRI ensures colors under this lamp appear natural and true, supporting spaces where visual accuracy matters.
- Wattage: Rated at 9W (CF9DS), offering meaningful energy savings versus comparable incandescent output.
- Platform: Part of the Sylvania Dulux® S Ecologic® family of compact fluorescent lamps engineered for efficient, reliable performance.
Technical Specifications
- Lamp Type: T4 S U-Tube Compact Fluorescent Lamp
- Base: 2-Pin G23
- Lumens: 580
- Color Temperature: 3500K
- CRI: 82
- Series: Dulux® S Ecologic®
Typical Applications
- Commercial Lighting Fixtures Using G23-Base Compact Fluorescent Lamps
- Task and Ambient Lighting in Offices and Retail Spaces
- Energy-Efficient Retrofit of Incandescent Fixtures
- Residential and Light Commercial Fixtures Requiring Compact Fluorescent Lamps
Why Sylvania?
Sylvania's Dulux® S Ecologic® compact fluorescent lamps are engineered to deliver dependable light output, accurate color rendering, and energy-efficient performance for demanding lighting environments. The 21273 CF9DS/835/ECO combines a compact T4 U-tube design with a standard G23 base, making it a practical, reliable choice for facilities and professionals seeking consistent 3500K lighting performance.
Manufacturer Resources
Product Specs
- list_batch:
- SYL-20260924
- Product Type:
- Compact Fluorescent Lamp
- Bulb Base:
- G23
- Light Temperature:
- 3500K
- CRI:
- 82
- Lumens:
- 580
- Product Wattage:
- 9W
- Department:
- Electrical
- Product Group:
- Lighting
- Product Subgroup:
- Lamps & Bulbs
Sylvania 21273 – Frequently Asked Questions
1) What does 3500K look like compared to the 2700K and 4100K bulbs I already have in the building?
3500K is neutral white, sitting between the warm yellow cast of 2700K/3000K lamps and the cooler, bluer look of 4100K. It is the common choice for offices and retail where you want white light without it reading yellow. Mixing 3500K into a space already lamped at 2700K or 4100K will show a visible color difference, so standardize a room at a time.
2) What exactly does the code CF9DS/835/ECO on this Sylvania lamp mean?
Breaking it down: CF9DS is a 9W compact fluorescent, Dulux S single U-tube style; 835 means 82 CRI (the 8) at 3500K (the 35); ECO identifies the Ecologic platform. The Sylvania order number is 21273. That whole string is what you give a distributor to get this exact lamp rather than the 2700K or 4100K version.
3) My G23 fixture is tight on space. Will this U-tube lamp clear the housing?
The 21273 is a T4 single U-tube, which is the most compact of the G23 CFL shapes, so it is the one specified for shallow sconces and under-cabinet housings. Wattage drives length in this family: a 9W is shorter than the 11W and 13W G23 lamps, so if an 11W or 13W currently fits, the 9W will too.
4) Can I put a 9W lamp in a fixture that is labeled for 13W G23?
Mechanically yes, the base is the same G23, but the ballast in a 13W fixture is matched to a 13W lamp. Running a 9W on it can shorten lamp life and give unpredictable output. Match the lamp wattage to what the fixture label calls for; the 21273 is the 9W lamp in the Dulux S Ecologic line.
5) Is 82 CRI good enough for retail display or office work?
At 82 CRI the 21273 renders color well enough for general office, corridor, and back-of-house retail lighting, and colors look natural rather than washed. For merchandise where color accuracy is the selling point (apparel, paint, cosmetics), buyers usually specify 90+ CRI sources instead.
6) Do compact fluorescent lamps like this contain mercury, and how do I dispose of them?
All compact fluorescent lamps, including this 9W Dulux S Ecologic, contain a small amount of mercury and should go to lamp recycling rather than general trash. The Ecologic designation is Sylvania's low-mercury platform, but it does not make the lamp mercury-free. Facilities handling volume typically use a lamp recycling box program.
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reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sylvania 21273 come with a warranty?
Absolutely. The Sylvania 21273 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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