SKU: 50100303961

Philips 40-Watt 4 ft. ALTO Supreme Linear T12 Fluorescent Tube Light Bulb, Cool White (4100K) (10-Pack)

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Description

Philips 40-Watt 4 ft. ALTO Supreme Linear T12 Fluorescent Tube Light Bulb, Cool White (4100K) (10-Pack)Philips 40W T12 4 ft. Cool White Fluorescent Tubes (10 Pack) Brighten kitchens, garages, and offices with Philips ALTO Supreme 40W T12 fluorescent tubes. Delivering cool white 4100K light at 2600 lumens, these 4 ft. glass tubes feature medium bi pin (G13) bases and long 24,000 hour life for reliable, low mercury illumination. Key Features: Cool White Output: 4100K color temperature provides crisp, neutral light for task areas High Brightness: 2600

Philips 40W T12 4 ft. Cool White Fluorescent Tubes (10-Pack)

Brighten kitchens, garages, and offices with Philips ALTO Supreme 40W T12 fluorescent tubes. Delivering cool white 4100K light at 2600 lumens, these 4 ft. glass tubes feature medium bi-pin (G13) bases and long 24,000-hour life for reliable, low-mercury illumination.


Key Features:

  • Cool White Output: 4100K color temperature provides crisp, neutral light for task areas
  • High Brightness: 2600 lumens per bulb for clear visibility in residential or commercial spaces
  • Long Life: Up to 24,000 hours average life to reduce replacements and maintenance
  • Standard Fit: T12 linear tube with G13 medium bi-pin base for compatible fluorescent fixtures
  • Low-Mercury ALTO Technology: More environmentally conscious design than traditional fluorescent bulbs

Specifications Table:

Specification Details
Wattage 40 W
Length 48 in
Diameter 1.5 in
Bulb Shape Linear T12
Light Appearance (CCT) Cool White 4100K (listed as Cool White 4000K on spec table)
Brightness 2600 lumens
Average Life 24,000 hours (up to 21.9 years at 3 hrs/day)
Base Type Medium Bi-Pin
Base Code G13
Ballast Compatibility Type A
Dimmable No
Indoor/Outdoor Use Indoor
Rated Damp Rated
Material Glass
Finish Frosted
CRI 85
Max Operating Temperature 113°F
Number of Bulbs Included 10
Lighting Technology Fluorescent
Voltage 120 V
Wattage Equivalence 40 W
Contains Mercury Yes (ALTO low-mercury)

Frequently Asked Questions (FAQ):

Q: What fixtures are these compatible with?
A: They fit 4 ft. T12 fluorescent fixtures that use a G13 medium bi-pin base and Type A ballast.


Q: Are these bulbs dimmable?
A: No, they are non-dimmable.


Q: What is the light color?
A: Cool White, 4100K.


Q: How long do they last?
A: Average life is up to 24,000 hours (about 21.9 years at 3 hours/day).


Q: Can they be used outdoors?
A: They are intended for indoor use and are damp rated.


Crisp, Clean Light that Elevates Everyday Spaces

These slender tubes cast a refined cool white that sharpens lines and brightens work surfaces, instantly refreshing utility rooms and home studios. I love the subtle green-capped detail—an industrial nod that feels thoughtfully engineered. Line them in a classic 4-ft shop fixture above a workbench or in a tidy grid for a gallery-bright garage. Reliable and luminous, they’re the quiet essential of a well-edited, luxurious workspace.


Choose Philips ALTO Supreme T12 tubes today for bright, long-lasting cool white light with fewer replacements.

Warranty

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 50100303961

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4.6 ★★★★★
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Verified Purchase
Love Leigh Angel
Massapequa, US
★★★★★ 5
BEST PILLOWS EVER!!!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I am very picky with my pillows because I have a bad neck and I can never seem to find a good pillow. But I tried this pillow because it had everything I was looking for and the price was great! You get two of them and they are absolutely awesome.! normally I would need to lay on two pillows to try and get comfortable but with these pillows I just lay on one and I wake up with no neck pain. They really have a nice cooling effect. They actually puff up immediately after opening them. All you have to do is just shake them up and the pillow just puffs straight up.. It comes with extra cushioning if you want it to make it firmer and if you don’t want it as firm as it is, you can actually take some out. It really is such a beautiful pillow. It’s perfect in every way to me being such a picky pillow person. You just lay your head down on it and it forms around your neck and your head and when you get up, it goes right back to its normal form. It doesn’t get flat and I love it. I completely recommend this to anyone who is a person who has a hard time finding a really good pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
E
Verified Purchase
$@[)E
Port Orchard, US
★★★★★ 5
Top of the line, best pillows Ive ever had
Color: White-cooling Basic, Size: Queen(Pack of 2)
These pillows are top of the line! I bought them in 2024 and they are still fluffy. When they lose a little fluff, you just punch em around a little bit and voila, like new again. They have kept their shape cery well and do great for cooling. I haven't had to add more filling yet either. I just laid my head on one and thought, I need to do a review cause everytime i lay on these pillows its like clouds. My head is heavy and this is relief :-D
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Reviewed in the United States on May 21, 2026
C
Verified Purchase
Chelsea H.
Alexandria, US
★★★★★ 3
Weird smell
Color: White-cooling Basic, Size: Queen(Pack of 2)
The pillows are great for someone looking for something cool and comfortable. We loved them so much that we bought a second pair. However, we were seriously disappointed with the odor of our last purchase. They give off a strong and indescribable chemical/burning plastic smell so nauseating that it’s difficult to sleep with. We’re hoping this issue will resolve with a couple more washes of the pillow cases, but am worried the source is the stuffing itself.
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Reviewed in the United States on May 28, 2026
K
Verified Purchase
Ken Hill
Belleville, US
★★★★★ 5
helped treat my sore neck
Color: White-cooling Basic, Size: Camping Pillow(Pack of 1)
This pillow — after dialing in the right amount of shredded foam — has greatly helped my sore neck. Initially, I had to remove some foam. Then I gradually added foam until it reached optimum comfort and support. It is also CPAP-friendly — especially when I position my head near the pillow's edge. (I am a left-side sleeper.) I like the travel size because I use a bulky hugging pillow to ease stress on my shoulder and elbow. That makes my side of the bed feel cramped if using a larger head pillow. A smaller pillow is easy to flip end-to-end in the middle of the night. I have spent lots of money on pillows over the years, but this is the best I've ever had for relieving [1] neck pain and [2] CPAP mask seal problems. Very comfortable, supportive, and affordable. I did not notice any unpleasant smell — and I am usually sensitive to that kind of thing. Would highly recommend.
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Reviewed in the United States on May 7, 2026
M
Verified Purchase
Molly Farrell
Port Orchard, US
★★★★★ 5
Love them!
Color: White-cooling Basic, Size: Queen(Pack of 2)
Love them! After 10 years with our MyPillows, they finally lost their fluff. The reviews I read of the MyPillows of today were not good; they didn’t have as much filling as they used to. These pillows remind me of how fluffy our new MyPillows were 10 years ago!! You sink right into them and can mush them however and they stay. These are way cheaper than the Coop and it’s the same concept; add or remove the filling as needed. The cooling side is a huge plus too! You won’t be disappointed with these pillows!
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Reviewed in the United States on May 22, 2026

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