SKU: 43911715090

Philips 40-Watt 4 ft. ALTO Supreme Plus High CRI T12 Fluorescent Tube Light Bulb, Cool White 4100K (30-Pack)

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Description

Philips 40-Watt 4 ft. ALTO Supreme Plus High CRI T12 Fluorescent Tube Light Bulb, Cool White 4100K (30-Pack)Philips 40W 4 ft T12 Cool White Fluorescent Tubes (30 Pack) These Philips ALTO Supreme Plus 4 ft T12 fluorescent tubes deliver crisp 4100K cool white light with a high 87 CRI for clear, accurate illumination. Each 40W glass tube produces 2550 lumens and lasts up to 24,000 hours, ideal for commercial and residential general lighting. Key Features: High CRI Cool White: 4100K color temperature with 87 CRI for accurate, bright task lighting Long Life

Philips 40W 4-ft T12 Cool White Fluorescent Tubes (30-Pack)

These Philips ALTO Supreme Plus 4-ft T12 fluorescent tubes deliver crisp 4100K cool white light with a high 87 CRI for clear, accurate illumination. Each 40W glass tube produces 2550 lumens and lasts up to 24,000 hours, ideal for commercial and residential general lighting.


Key Features:

  • High CRI Cool White: 4100K color temperature with 87 CRI for accurate, bright task lighting
  • Long-Life Performance: Up to 24,000-hour average life to reduce maintenance
  • Reliable Output: 2550 lumens per bulb; 63.8 lm/W efficiency
  • Standard Fit: T12 linear tube with G13 medium bi-pin base for Type A ballast fixtures
  • ALTO Technology: Low-mercury design; damp-rated for indoor commercial or residential use

Specifications Table:

Specification Details
Wattage 40 W
Length 48 in (4 ft)
Diameter 1.5 in
Bulb shape T12 linear
Base type G13 medium bi-pin
Color temperature Cool White 4100K (listed as 4000K on site)
Color Rendering Index (CRI) 87
Lumens 2550 lm
Lumens per watt 63.8 lm/W
Average life 24,000 hours
Ballast compatibility Type A
Dimmable No
Material Glass
Finish Frosted
Indoor/Outdoor Indoor; Damp Rated
Operating temperature max 113 °F
Voltage 120 V
Number of bulbs included 30
Contains mercury Yes
Control type Switch
Lighting technology Fluorescent
Bulb color White
Wattage equivalence 40 W
Estimated yearly energy cost $4.82 (3 hrs/day, 11¢/kWh)

Frequently Asked Questions (FAQ):

Q: Are these bulbs dimmable?
A: No. These T12 fluorescent tubes are non-dimmable.


Q: What ballast do they require?
A: They are compatible with Type A fluorescent ballasts designed for T12 lamps.


Q: What is the color and brightness?
A: Cool White 4100K color temperature with 2550 lumens per bulb and 87 CRI.


Q: Where can these be used?
A: For indoor, damp-rated applications in commercial or residential fixtures using 4-ft T12 lamps.


Q: How many bulbs are included?
A: 30 bulbs are included in this pack.


Crisp, Cool Illumination for Elevated Everyday Spaces

The cool white glow of these linear tubes brings a refined clarity to workshops, kitchens, and utility spaces. I love the sleek, frosted finish—quietly luxe while delivering true-to-color light that keeps surfaces feeling fresh and functional. Line a series above a workbench or within a soffit to create a uniform ribbon of brightness. This is the kind of effortless, dependable lighting that underpins a modern, polished home.


Brighten your space with long-lasting, high-CRI cool white light—add this 30-pack to your cart today.

Warranty

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SKU: 43911715090

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ForrestA
Charlottesville, US
★★★★★ 4
Nice and Simple - but big
Style: 4-Tier Shelf Brackets, Hardware Only.
Nice product, very simple in reality. All screws together. Shelves are probably 12inches high - higher than I wanted so I won't be using it after all - but that is my fault for not realizing how vertically spaced the shelves would be. The unit takes up a lot of vertical wall space. My only dislike (hence the -1 rating) is the large stamped letters on every wall mounting plate. The letters don't appear to mean anything, and are very large and upraised - to me they detract from the overall appearance of the unit. The letters are not possible to get rid of without a grinder or significant file-work and repainting everything (not worth the significant effort that would entail).
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Reviewed in the United States on October 25, 2025
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CLIIP. Strength & Conditioning
Cuba, US
★★★★★ 5
Great shelving!
Style: 4-Tier Shelf Brackets, Hardware Only.
Love this product
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Reviewed in the United States on February 19, 2026
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orestes o.
Phoenix, US
★★★★★ 1
Demasiado pesado
Style: 4-Tier Shelf Brackets, Hardware Only.
No me gustó , además de ser muy complejo para armar , es demasiado pesado , es para paredes bien fuerte ya que requiere muchos tornillos
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Reviewed in the United States on December 28, 2025
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s.wkan
Louisville, US
★★★★★ 5
Love these shelves
Style: 4-Tier Shelf Brackets with 3 Boards-24in
Highly recommend these shelves. So easy to put together and they are sturdy and look great. I’m considering buying a second one!!
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Reviewed in the United States on September 19, 2025
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Ronald D Smith Jr
Charlottesville, US
★★★★★ 5
Perfect
Size: 16 Inch
Exactly what I ordered, took just a few minutes to assemble and mount the legs. Love that the bottoms can be manipulated to give a balanced stance.
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Reviewed in the United States on February 23, 2026

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