Product Overview
Sylvania F24T12/CW — 21W T12 Slimline Fluorescent Lamp, 4200K Cool White, Instant Start
The Sylvania F24T12/CW is a 21-watt T12 Slimline fluorescent lamp from Sylvania, designed for instant start fluorescent fixtures using single-pin Slimline bases. With a 4200K cool white color temperature, CRI 60, 1,150 initial lumens, and a rated life of 7,500 hours, this lamp is suited for general commercial and industrial lighting applications. MOL 22" x 1.5" diameter (T12). Verify base type, wattage, and ballast compatibility before ordering — Slimline lamps use a single-pin base and require an instant start ballast.
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Wattage
21W
T12 Slimline
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Lumens
1,150 lm
Initial Output
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Color Temp
4200K
Cool White
|
Base
Single Pin
Slimline
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Rated Life
7,500 hrs
Average Life
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Technical Specifications
| Brand | Sylvania |
| Lamp Type | T12 Slimline Fluorescent — Instant Start |
| Wattage | 21W |
| Initial Lumens | 1,150 lm |
| Mean Lumens | 1,000 lm |
| CRI | 60 |
| Color Temperature | 4200K Cool White |
| Base Type | Single Pin (Slimline) |
| Start Type | Instant Start |
| Rated Average Life | 7,500 hours |
| Max Overall Length (MOL) | 22" |
| Bulb Diameter | 1.5" (T12) |
Product Overview
The Sylvania F24T12/CW is a T12 Slimline fluorescent lamp for instant start fluorescent fixtures. The Slimline designation indicates a single-pin base — this lamp requires a compatible instant start ballast and will not operate in preheat or rapid start fixtures with bi-pin sockets. At 4200K cool white with 1,150 initial lumens and 7,500-hour rated life, it is well suited for general commercial, industrial, and utility lighting applications where standard output and long service intervals are the priority.
Compatible Applications
- Commercial and industrial fluorescent fixtures — Direct replacement in 2-foot T12 Slimline single-pin instant start fixtures.
- Retail, warehouse, and utility lighting — General-purpose commercial lighting in fixtures designed for T12 Slimline lamps.
- Retrofit and maintenance replacement — Verify single-pin base type and instant start ballast compatibility before ordering.
Before Ordering — Verify
- Base Type: Confirm the fixture uses a single-pin Slimline base — not the standard bi-pin (G13) base used in most T12 lamps. Slimline and standard T12 bases are not interchangeable.
- Wattage: Confirm the fixture and ballast are rated for 21W.
- Ballast Compatibility: This lamp requires a compatible instant start ballast rated for T12 Slimline lamps.
- Physical Fit: Confirm 22" MOL and 1.5" T12 diameter fit your fixture.
Safety and Handling Guidelines
- Correct Ballast Required: Use only with a compatible instant start T12 Slimline ballast. Incorrect ballast type will cause lamp failure.
- Allow Cooling: Allow lamps and fixtures to cool before servicing or relamping.
- Mercury Content: Contains mercury. Do not dispose of in regular trash. Recycle through an approved lamp recycling program in accordance with federal, state, and local regulations.
Compliance
- Contains mercury — subject to applicable lamp recycling and disposal regulations. California, Washington, and other states may have mandatory take-back or handling fee requirements.
- Verify RoHS compliance status and additional certifications with the Sylvania manufacturer specification sheet prior to use in regulated installations.
Ordering Information
- Brand: Sylvania
- Wattage / CCT: 21W / 4200K Cool White
- Base: Single Pin (Slimline)
- Packaging: Sold individually.
- Case quantities and bulk pricing: Contact ADL Supply for volume orders.
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
