Product Overview
Sylvania 21776 FO25/835/XP/ECO 25W 36" T8 3500K Neutral White OCTRON 800 XP Fluorescent Lamp
The Sylvania 21776 (FO25/835/XP/ECO) is a 25W 36" T8 fluorescent lamp on a Medium Bi-Pin base, part of the OCTRON 800 XP series. Rated 3500K neutral white at 85 CRI, it delivers 2,175 initial lumens (2,065 mean @ 25°C/77°F) and is designed to operate on dedicated magnetic rapid start, electronic instant start, or programmed rapid start ballasts.
Wattage 25W 36" T8 |
Color Temp 3500K Neutral White |
Lumens 2,175 Initial |
CRI 85 OCTRON 800 XP |
Rated Life 24,000 Hrs (3hr/start) |
Technical Specifications
| Item Number | 21776 |
| Ordering Abbreviation | FO25/835/XP/ECO |
| Series | OCTRON 800 XP |
| Bulb Shape | T8 |
| Base | Medium Bi-Pin |
| Wattage | 25W |
| Nominal Length | 36" |
| MOL (Maximum Overall Length) | 35.78" |
| Color Temperature | 3500K (Neutral White) |
| CRI | 85 |
| Initial Lumens | 2,175 lm |
| Mean Lumens @ 25°C/77°F | 2,065 lm |
| Average Rated Life | 24,000 hours (3hr/start) |
| 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 lamp is a T8 fluorescent designed for dedicated magnetic rapid start, electronic instant start, or programmed rapid start ballast systems. For ballast/lamp system compatibility details, refer to the Systems Performance Guide in the SYLVANIA QUICKTRONIC Ballast Technology and Specification Guide.
Rated life is 24,000 hours (3hr/start), with 2,175 initial lumens dropping to 2,065 mean lumens over the rated life at 25°C/77°F ambient. This lamp uses a Medium Bi-Pin base and measures 35.78" maximum overall length.
Compatible Applications
- Fixtures specified for a 25W 36" 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 21776 or its FO25/835/XP/ECO 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 3500K color temperature matches the rest of your installation
- Confirm lamp length (36") and base type match your fixture
Safety and Handling Guidelines
- 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: 21776
- Ordering Abbreviation: FO25/835/XP/ECO
- Manufacturer Part Number: FO25/835/XP/ECO
- UPC: 046135217760
- 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.
