Philips Lighting 281790 F32T8 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$9.56
Philips Lighting 281790 F32T8 Alto Plus T8 Fluorescent Lamp, 4100K

Philips Lighting 281790 F32T8 Alto Plus T8 Fluorescent Lamp, 4100K

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Model: 281790

In Stock (leaves warehouse same day if ordered before 3pm ET)

$9.56
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Philips Lighting 281790 F32T8 Alto Plus T8 Fluorescent Lamp, 4100K

The Philips Lighting 281790 F32T8/TL841 PLUS ALTO HV is a 32-Watt T8 fluorescent lamp built on the trusted Alto® Plus platform, delivering 2950 lumens of light output at a crisp 4100K color temperature with an 85 CRI for accurate, consistent color rendering. Measuring 48 inches in length and terminating in a standard 2-pin G13 base, this linear fluorescent lamp is a direct fit for standard T8 fixtures used throughout commercial, industrial, and institutional facilities. Sold in a 30-pack, this Philips lamp is engineered for facility managers and electrical contractors who need dependable, high-volume relamping stock that performs reliably shift after shift.

Key Features

  • Lamp Type: T8 fluorescent lamp with 2-pin G13 base for compatibility with standard T8 fixtures and ballasts.
  • Length: 48-inch length matches standard 4-foot T8 fixture applications for straightforward relamping.
  • Wattage: 32-Watt lamp designed for efficient light output in office, retail, and industrial spaces.
  • Light Output: 2950 lumens provides strong, consistent illumination across the rated lamp life.
  • Color Temperature: 4100K cool-white color rendering suited to general-purpose commercial and industrial lighting.
  • Color Rendering: 85 CRI delivers accurate color rendering for tasks requiring good color distinction.
  • Alto® Plus Technology: Part of the Philips Alto® Plus lamp family, engineered for consistent performance in standard fluorescent fixtures.
  • Pack Quantity: Supplied in a 30-pack, ideal for bulk relamping projects and facility maintenance stock.

Technical Specifications

  • Lamp Type: T8 Fluorescent
  • Wattage: 32-Watt
  • Base: 2-Pin G13
  • Lumens: 2950
  • CRI: 85
  • Color Temperature: 4100K
  • Length: 48-Inch
  • Pack Quantity: 30

Typical Applications

  • Commercial Office and Retail Lighting
  • Industrial and Warehouse Facility Lighting
  • Institutional and Educational Facility Relamping
  • General-Purpose T8 Fixture Retrofits
  • Bulk Facility Maintenance and Relamping Programs

Why Philips Lighting?

Philips Lighting's Alto® Plus T8 lamps are engineered for consistent light output, accurate color rendering, and reliable performance in standard fluorescent fixtures. With a 4100K color temperature, 85 CRI, and 2950-lumen output backed by the Philips name, the 281790 F32T8/TL841 PLUS ALTO HV gives facility teams a dependable, code-familiar lamp for high-volume relamping needs.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
PHIL-20260925
Product Type:
Fluorescent Tube
Product Wattage:
32W
Light Temperature:
4100K
Bulb Base:
G13
Lumens:
2950
CRI:
85
Department:
Electrical
Product Subgroup:
Lamps & Bulbs
Product Group:
Lighting
Color Code:
TL841 [ CCT of 4100K (841)]
Base:
G13 [ Medium Bi-Pin Fluorescent]
Wattage:
32 W
Color Temperature:
4100 K
Product Length:
47.75 in
Product Height:
1 in
Product Width:
1 in
Country Of Origin:
United States
Product Weight:
0.351 lb
Product Color:
TL841

Philips Lighting 281790 – Frequently Asked Questions

1) Will the Philips 281790 F32T8 lamp fit my existing 4-foot T8 fixtures?
Yes, if those fixtures take a standard 4-foot bi-pin T8. The 281790 is a 1 inch diameter tube measuring 47.75 inches with a G13 medium bi-pin base on each end, which is the standard socket on 4-foot T8 strip, troffer, and wrap fixtures. No socket change or adapter is needed for a straight lamp-for-lamp relamp.
2) Will the 281790 run on my existing T8 ballast, or do I need to rewire?
It is a 32W linear fluorescent lamp, not an LED tube, so it runs on the instant-start or program-start T8 ballast already in the fixture. There is no rewiring, no ballast bypass, and no socket replacement involved. That is the main reason facility teams keep buying F32T8 rather than converting: the fixture stays as-is.
3) What does the 841 in F32T8/TL841 mean, and will it match the other tubes in my building?
The 841 code breaks into two parts: the 8 means 80-plus CRI (this lamp is 85 CRI) and the 41 means a 4100K color temperature. So it matches any other 841 or 4100K T8 already in the building, whatever the brand. It will not match 3500K (835) or 5000K (850) lamps in the same room, and mixing them in one open space is obvious to the eye. If your existing tubes are marked 841, this drops in.
4) I have U-bend or 8-foot fluorescent fixtures, not 4-foot straight tubes. Does this lamp work?
No. The 281790 is a straight 47.75 inch tube and will not go in either one. For 2-foot U-tube troffers, the Sylvania 21878 FBO31/835 Octron Curvalume is a 31W T8 U-bend. For 8-foot fixtures, the Sylvania 22207 Octron 800 HO is a 96-inch T8. Both are different lamps, not variations of this one.
5) What is the closest cross-brand equivalent to the Philips 281790 F32T8 lamp?
The Philips 281790 is a 32-watt T8 linear fluorescent lamp at 4100K with a G13 bi-pin base. The nearest cross-brand match is the Sylvania 22437, a 32-watt T8 linear fluorescent lamp from the Octron Vivid Value Ecologic series, which runs 3500K rather than 4100K. If the rest of the fixtures in the space are lamped at 4100K, the Philips 281790 keeps the color consistent; the Sylvania 22437 shifts the room warmer.
6) My T8 fixtures are 8 feet long, not 4 feet. What should I order instead of the Philips 281790?
The Philips 281790 is a 48-inch lamp with an overall length of 47.75 inches, so it will not span an 8-foot fixture. For those housings, the Sylvania 22207 Octron 800 HO is a 96-inch T8 fluorescent lamp. Measure the socket-to-socket span before ordering; a 4-foot lamp in an 8-foot fixture will not seat in both lampholders.
7) What do I use in place of the Philips 281790 for a 2x2 troffer with U-bend sockets?
The Philips 281790 is a straight 48-inch T8 tube, which does not fit a troffer prepped for U-bend lamps. For that fixture the Sylvania 21878 is an FBO31/835 T8 U-tube fluorescent lamp at 31 watts and 3500K. It is a different lamp shape and a different color temperature from the 4100K Philips 281790, so if 4100K matters to the space, note that the U-tube is specified at 3500K.
8) Is 4100K the right color temperature for an office or warehouse, or should I go 3500K or 5000K?
4100K is the middle choice and the usual default for commercial office, retail, and warehouse space, cool white without reading blue. Go 3500K if the space is meant to feel warmer, like hospitality or a lobby, or if the rest of the floor is already 3500K. Go 5000K for inspection, task, and industrial work where you want a daylight cast. For a 3500K T8 instead, the Sylvania 22437 Octron Vivid Value Ecologic is a 32W 3500K 4-foot T8.
9) How much light does one Philips 281790 tube put out?
2950 lumens per lamp at 32 watts. In a two-lamp 4-foot troffer that is roughly 5900 lamp lumens before fixture and ballast losses, which is why 4100K two-lamp and three-lamp troffers are the standard for general office ceilings. Use the 2950 figure when you are checking a lumen-for-lumen swap against whatever is in the fixture now.
10) What exact part number do I order to match a Philips F32T8/TL841 PLUS ALTO HV already in my fixtures?
Order Philips 281790. That is the manufacturer part number for the F32T8/TL841 PLUS ALTO HV, 32W, 4100K, 85 CRI, 2950 lumens, G13 base. If the etch on the end cap of your existing tube reads F32T8/TL841 PLUS ALTO, 281790 is the straight replacement.
11) Is the Philips 281790 a high-output lamp?
The Philips 281790 is a standard 32-watt F32T8 lamp rated 2950 lumens at 4100K, not a high-output type. High-output T8s are a separate family, such as the Sylvania 22207 in the Octron 800 HO/Ecologic series. HO lamps require an HO-rated ballast, so they are not interchangeable with a standard 32-watt T8 on a normal instant or rapid start ballast.
12) Which 4-foot T8 lamp should I standardize on across a facility if some areas need warmer light?
Both lamps share the 4-foot T8 platform, so a facility can carry one shape in two color temperatures: the Philips 281790 at 4100K with 85 CRI and 2950 lumens for general office, retail, and warehouse areas, and the Sylvania 22437 at 3500K for spaces where a warmer appearance is wanted. Both are 32-watt T8s, so ballast type and fixture prep do not change between them.
13) Is 85 CRI good enough for retail display or color-matching work?
At 85 CRI this lamp renders color well enough for general retail, offices, classrooms, and most industrial tasks where you need to tell colors apart reliably. It is not a high-CRI (90-plus) lamp, so for print proofing, paint matching, or clinical color evaluation you want a dedicated high-CRI source instead.
14) How is the Philips 281790 packaged for a bulk relamping project?
It ships 30 lamps to a case, which is the normal case quantity for 4-foot T8 and suits scheduled group relamps rather than one-off service calls. Each lamp weighs 0.351 lb, so a full case of tubes is light but long, about 48 inches end to end, and needs the usual care in handling and transport.
15) Are these Philips T8 lamps made in the USA?
Country of origin on the 281790 is the United States, which matters if you are buying against a domestic-preference or Buy American line item on a government, school, or healthcare purchase order.
How fast can I get the Philips Lighting 281790 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Philips Lighting 281790 come with a warranty?
Absolutely. The Philips Lighting 281790 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Philips Lighting 281790?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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