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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Bill M
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★★★★★ 5
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Reviewed in the United States on December 14, 2025
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Oregon Gma
Alexandria, US
★★★★★ 5
Cute book and engaging story
Format: Paperback
My grand daughter reads at a 3rd grade reading level, so doesn't want to read the easy readers but loses interest easily with traditional chapter books. This little book was a perfect fit. She's an axolotl fan so the pictures and the story line kept her engaged. There's even a couple of pages of axolotl facts at the end of the book. Well worth adding to her book shelf!
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Reviewed in the United States on May 23, 2026
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Olive O
Fort Morgan, US
★★★★★ 5
Love this book!
Format: Hardcover
Couldn't put this down! The story is lovely, heartfelt, and bounces along. I was sad when it ended. Have to read it again, then!
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Reviewed in the United States on April 23, 2026
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Erin sumner
Bozeman, US
★★★★★ 5
Perfect for a 6 year old.
Format: Paperback
Grandson turned 6 and he absolutely loved it. Best reaction to it ever.
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Reviewed in the United States on April 19, 2026
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RosanneP
Pawtucket, US
★★★★★ 5
Quick, fun read
Format: Kindle
I purchased this because my son and I have been raising 2 albino axolotls since 2022. The illustrations are very cute and well done. The story includes a few characters and even though it's so short, there is clear character development. I would recommend this for children under the age of 8 to be read to. With repetition, they will easily be able to read this book (apart from those with reading challenges). My 12 year old read it through in one sitting and added his own unique reading style to it which was really funny. I wouldn't recommend reading this on a small screen as the font is small.
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Reviewed in the United States on October 20, 2025

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