Product Overview
Philips 20490-9 F25T8/ADV835 ALTO Fluorescent Lamp — 25W | 36 in T8 | 2,250 Lumens | 3500K Neutral White | G13 Medium Bi-Pin Base
The Philips 20490-9 F25T8/ADV835 ALTO is a 25W 3500K Neutral White T8 linear fluorescent lamp, 36 in long, with a G13 medium bi-pin base and Philips ALTO low-mercury technology. It produces 2,250 initial lumens (2,185 mean lumens) with a color rendering index (CRI) of 85 and a rated average life of 24,000-36,000 hours.
Power 25W T8 Fluorescent | Brightness 2,250 lm Initial lumens | Color Temp 3500K Neutral White | CRI 85 | Interface G13 Medium Bi-Pin | Rated Life 24,000-36,000 h Average rated |
ADL Supply Expert Application & Replacement Guide
This 25W lamp is used to re-lamp 3-foot T8 fixtures in restaurants, retail stores, offices, healthcare facilities and contractor installations. Philips positions the 3500K neutral white color for balanced natural-white spaces such as offices, healthcare, educational and retail. It is a drop-in replacement only when the wattage, length and base match the lamp you are taking out.
ALTO lamps have a green end cap, which marks Philips' extra-low mercury design. The previous listing cites 1.7 mg of mercury per lamp, and describes the lamp as dimmable without burn-in; dimming requires a compatible dimming ballast.
T8 lamps have a 1-inch (26 mm) tube. T8 and T12 lamps share the same G13 base, so the base alone will not tell you which type your fixture uses; match the wattage, length and lamp code printed on the end of the lamp you are replacing.
Detailed Product Specifications
- Brand: Philips Lighting
- Product Name: Philips 20490-9 F25T8/ADV835 ALTO
- Philips Order Code: 20490-9
- UPC Barcode Number (GTIN-12): 046677204907
- Lamp Type: T8 linear fluorescent (Advantage 800 Series ALTO)
- Lamp Wattage: 25W
- Color Temperature: 3500K, Neutral White
- Color Rendering Index (CRI): 85
- Initial Lumens: 2,250 lm
- Mean Lumens: 2,185 lm
- Rated Average Life: 24,000-36,000 hours
- Base: G13 Medium Bi-Pin
- Nominal Length (MOL): 36 in
- Bulb Diameter: 1 inch (T8)
- Case Quantity: 25 per case
Ballast & Fixture Compatibility
Confirm the ballast is rated for a 25W T8 lamp, and check Philips ballast compatibility documentation for your specific ballast.
Before You Order – Verify
- Confirm the product name and code: Philips 20490-9 F25T8/ADV835 ALTO (Philips order code 20490-9).
- Confirm the fixture uses G13 medium bi-pin sockets and takes a 36 in lamp.
- Confirm the ballast is rated for a 25W T8 lamp.
- Confirm 3500K matches the lamps already installed before partial re-lamping.
Bulk Commercial Lighting Supply & Project Support
ADL Supply delivers commercial-volume fulfillment, tiered contractor pricing, and full pallet project quoting to electrical accounts across the United States.
For wholesale inquiries, volume pricing, or manufacturer spec sheet documentation, call our commercial branch at 1-800-235-3489.
