Product Overview
Sylvania 20837 F8T5/CWX 8W T5 4100K Cool White Deluxe Fluorescent Lamp
The Sylvania 20837 (F8T5/CWX) is a 8W T5 miniature bi-pin (5/8" diameter) linear fluorescent lamp from the catalog group "Miniature T5 Preheat Lamps (Starter Required)". It measures 11.91" in overall length and produces 4100K cool white deluxe light with an 87 CRI. Rated average life is 7,500 hours based on 3-hour starts. This is a preheat lamp: the catalog lists it under Starter Required.
Wattage 8W T5 | Color Temp 4100K Cool White Deluxe | Lumens 270 Initial @ 25°C | Length 11.91" 12" Nominal | Rated Life 7,500 Hours (3hr starts) |
Technical Specifications
| Sylvania Product Number | 20837 |
| Ordering Abbreviation | F8T5/CWX |
| Series | Miniature T5 Preheat Lamps (Starter Required) |
| Bulb Type | T5 Miniature Bi-Pin (5/8" diameter) |
| Base | G5 Mini Bi-Pin |
| Wattage | 8W |
| Nominal Length | 12" |
| MOL (Maximum Overall Length) | 11.91" |
| Color Temperature | 4100K (Cool White Deluxe) |
| CRI | 87 |
| Initial Lumens @ 25°C/77°F | 270 (mean 235) |
| Average Rated Life (3hr starts) | 7,500 hours |
| Starting | Preheat – starter required |
| Standard Package Quantity | 24 per case |
| Mercury Content | Contains mercury – not for sale or shipment in CA, CO, HI, ME, MN, OR, RI, VT; recycle per lamprecycle.org |
Product Overview
The Sylvania 20837 is a 8W miniature T5 preheat lamp on a G5 mini bi-pin base. It is rated at 7,500 hours average life on 3-hour starts, with 4100K color temperature and 87 CRI.
The catalog lists this lamp as a preheat lamp that requires a starter, and gives 270 initial lumens at 25°C/77°F (mean 235). Because the starting method matters, check the existing ballast and starter before ordering.
Compatible Applications
- Fixtures specified for a 8W T5 G5 mini bi-pin lamp at 11.91" length
- Commercial, retail, and office linear fluorescent fixtures using T5 lamps
- Direct replacement for the Sylvania 20837 or its F8T5/CWX ordering abbreviation
Before Ordering – Verify
- Confirm your fixture accepts a 8W T5 lamp with a G5 mini bi-pin base
- Confirm lamp length of 11.91" matches your fixture's socket spacing
- This is a preheat lamp – confirm the fixture uses a starter and a compatible ballast
- Confirm 4100K color temperature matches the rest of your installation
- Minimum starting temperature is a function of the ballast; consult the ballast manufacturer
Safety and Handling Guidelines
- Turn off and allow the fixture to cool before relamping
- Handle by the base/end caps; avoid flexing or striking the glass tube
- Contains mercury – if broken, ventilate the area and follow EPA cleanup guidance
- Dispose of / recycle in accordance with state and local regulations
- Catalog note: T5 lamps operated on high-frequency ballasts may experience an abnormal end-of-life condition (bulb wall cracking near the base, or overheating of the base and socket). NEMA recommends ballasts with an end-of-life failure mode; see www.NEMA.org
Compliance
- Contains mercury – not for sale or shipment in CA, CO, HI, ME, MN, OR, RI, VT
- Recycle per lamprecycle.org
Ordering Information
- Sylvania Product Number: 20837
- Ordering Abbreviation: F8T5/CWX
- UPC: 046135208379
- Standard Package Quantity: 24 per case
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
