Philips 281550 F32T8/TL841/ALTO

Philips 281550 F32T8/TL841/ALTO Fluorescent Lamp — 32W | 48-Inch T8 | 2,850 Lumens | 4100K Cool White | G13 Medium Bi-Pin Base

The Philips 281550 F32T8/TL841/ALTO is a 32W 4100K Cool White T8 linear fluorescent lamp with a G13 medium bi-pin base and Philips ALTO low-mercury technology. It produces 2,850 initial lumens (2,710 mean lumens), with a color rendering index (CRI) of 85 and a rated life of 24,000–36,000 hours.

ADL Supply Expert Application & Replacement Guide

This 32W lamp is used to re-lamp standard 4-foot T8 fixtures. Philips positions the 4100K color for cool-white commercial spaces such as offices, warehouses, schools and institutional facilities. It is a drop-in lamp 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 low mercury content makes the lamp TCLP compliant, which can reduce disposal costs in commercial and institutional buildings.

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 281550 F32T8/TL841/ALTO
• Product Series: TL ALTO 800 Series
• Philips Order Code: 28155-0
• Lamp Type: T8 linear fluorescent
• Lamp Wattage: 32W
• Color Temperature: 4100K, Cool White
• Color Rendering Index (CRI): 85
• Initial Lumens: 2,850 lm
• Mean Lumens: 2,710 lm
• Lumen Maintenance: 94% at 40% of rated life
• Rated Average Life: 24,000–36,000 hours
• Base: G13 Medium Bi-Pin (green end cap, ALTO low-mercury)
• Nominal Length (MOL): 48 inches
• Bulb Diameter: 1 inch (T8)
• Start Type: Instant start or programmed start, per the previous listing

Ballast & Fixture Compatibility

The previous listing states that this lamp works with standard instant-start and programmed-start electronic ballasts. Confirm the ballast is rated for a 32W T8 lamp, and check Philips ballast compatibility documentation for your specific ballast.

Equivalent Lamps & Cross-Reference

If you know this lamp by another brand's number, or need a replacement, use the numbers below. Confirm that the wattage, color temperature, and ballast type match your fixture before substituting, since ratings can differ between brands.

• Current Replacement: Philips F32T8TL941ALTO

Before You Order – Verify

• Confirm the product name and code: Philips 281550 F32T8/TL841/ALTO (Philips order code 28155-0).
• Confirm the fixture uses G13 medium bi-pin sockets and takes a 48-inch (4-foot) lamp.
• Confirm the ballast is rated for a 32W T8 lamp.
• Confirm 4100K 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.