Product Overview
Sylvania 21948 FO28/841/XP/SS/ECO/SL 28W 48" T8 4100K Cool White OCTRON 800 XP SAFELINE Shatter-Resistant Coated Fluorescent Lamp
The Sylvania 21948 (FO28/841/XP/SS/ECO/SL) is a 28W 48" T8 fluorescent lamp on a Medium Bi-Pin base, part of the OCTRON 800 XP SAFELINE Shatter-Resistant Coated series. Rated 4100K cool white at 85 CRI, it delivers 2,670 initial lumens (2,510 mean @ 25°C/77°F) and is designed to operate on dedicated magnetic rapid start, electronic instant start, or programmed rapid start ballasts.
Wattage 28W 48" T8 | Color Temp 4100K Cool White | Lumens 2,670 Initial | CRI 85 OCTRON 800 XP SAFELINE | Rated Life 24,000 Hrs (3hr/start) |
Technical Specifications
| Item Number | 21948 |
| Ordering Abbreviation | FO28/841/XP/SS/ECO/SL |
| Series | OCTRON 800 XP SAFELINE Shatter-Resistant Coated |
| Bulb Shape | T8 |
| Base | Medium Bi-Pin |
| Wattage | 28W |
| Nominal Length | 48" |
| MOL (Maximum Overall Length) | 47.78" |
| Color Temperature | 4100K (Cool White) |
| CRI | 85 |
| Initial Lumens | 2,670 lm |
| Mean Lumens @ 25°C/77°F | 2,510 lm |
| Average Rated Life | IS 3hr/start: 24,000 hrs; IS 12hr/start: 40,000 hrs; PRS 3hr/start: 40,000 hrs; PRS 12hr/start: 42,000 hrs |
| Coating | SAFELINE shatter-resistant coated |
| Standard Package Quantity | 30 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
This Sylvania OCTRON 800 XP SAFELINE Shatter-Resistant Coated lamp is a T8 fluorescent designed for dedicated magnetic rapid start, electronic instant start, or programmed rapid start ballasts. For ballast/lamp system compatibility details, refer to the Systems Performance Guide in the SYLVANIA QUICKTRONIC Ballast Technology and Specification Guide.
Average rated life: IS 3hr/start: 24,000 hrs; IS 12hr/start: 40,000 hrs; PRS 3hr/start: 40,000 hrs; PRS 12hr/start: 42,000 hrs. It delivers 2,670 initial lumens, dropping to 2,510 mean lumens at 25°C/77°F ambient. This lamp uses a Medium Bi-Pin base and measures 47.78" maximum overall length.
SAFELINE coated lamps use a non-shattering covering that contains glass and other lamp components if the lamp breaks. The covering must stay intact or the lamp must be replaced.
Compatible Applications
- Fixtures specified for a 28W 48" T8 lamp with a Medium Bi-Pin base
- Fixtures running magnetic rapid-start, electronic instant-start, or programmed rapid-start T8 ballasts
- Direct replacement for the Sylvania 21948 or its FO28/841/XP/SS/ECO/SL ordering abbreviation
Before Ordering – Verify
- Confirm your ballast type is compatible – magnetic rapid start, electronic instant start, or programmed rapid start
- For instant-start operation, confirm your lampholders are shunted – non-shunted sockets require the two bi-pin contacts to be connected to each other
- Confirm 4100K color temperature matches the rest of your installation
- Confirm lamp length (48") and base type match your fixture
- SAFELINE lamps are for indoor use only, below 135°F ambient.
Safety and Handling Guidelines
- SAFELINE lamps are for indoor use only, in ambient temperatures below 135°F. Use sockets that provide adequate pin-to-socket contact, and do not use with defective ballasts, sockets, or improper wiring.
- Always disconnect power before servicing or installing – wire per the ballast schematics and National Electric Code
- 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 mercury-lamp regulations
Compliance
- Contains mercury – not for sale or shipment in CA, CO, HI, ME, MN, OR, RI, VT
- Recycle per lamprecycle.org
Ordering Information
- Item Number: 21948
- Ordering Abbreviation: FO28/841/XP/SS/ECO/SL
- Standard Package Quantity: 30 per case
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
