Model # 422816

Internet #203466582

Store SKU #147899

Philips 4 ft. T12 40-Watt Cool White Supreme Linear Fluorescent ALTO Light Bulb (2-Pack)
0046677422813

Philips

4 ft. T12 40-Watt Cool White Supreme Linear Fluorescent ALTO Light Bulb (2-Pack)

  • Cool white lighting
  • Saves energy
  • Good for work spaces and more
$6.97 /set
(limit 35 per order)

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Product Overview

Light your basement, garage or workshop with the Philips Linear Fluorescent 40-Watt T12 cool white light bulb. It makes cool white light that is ideal for a work-like environment. Philips Linear Fluorescent T12 light bulbs feature ALTO Lamp Technology.

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Customer Questions & Answers

How do I know if I need a T8 or T12, the old bulb doesn't say. It says F40 Universal DLX 40 Watt Cool White. I measured it and it is about 46 inches.

Asked by: T8orT12lost
A T8 is 1 inch in diameter or a circumference of 8 centimeters and usually 32 watts. A T12 is 1.5 inches in Diameter or a Circumference of 12 Centimeters and usually 40 watts. Both should be 48 inches or 4 feet with the pins.
Answered by: Boatist
Date published: 2017-02-16

is it dimable?

i am doing a job and the costumer wants dimable fluorescent lights.
Asked by: james
Not as far as I know.
Answered by: Skip
Date published: 2016-08-29

Is there a noticeable difference in color between this bulb (2600 lumens) and an older version with output of 3200 lumens?

Asked by: Fog
yes of course 3200 is 20% brighter
Answered by: Animal
Date published: 2016-06-29

Is this operable in colder temperatures?

Asked by: Marty
the colder the temperature.....the harder starting the bulb is.........maybe no light at all........
Answered by: Animal
Date published: 2016-11-22
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Customer Reviews

4 ft. T12 40-Watt Cool White Supreme Linear Fluorescent ALTO Light Bulb (2-Pack) is rated 3.6 out of 5 by 10.
Rated 5 out of 5 by from Excellent replacement for Sylvania I replaced four Sylvania 34W tubes with these ones in my kitchen. At 40W the kitchen is now much, much brighter. The tubes were easy to install. Just swapped out the old ones and inserted the new ones. Just be careful about the diameter of the tubes you're looking for. The T12 tubes have a larger diameter than the T8 tubes I think, which therefore makes replacing T8's with T12's a bad idea. The length says 4 feet, but that's an approximation. The tubes are actually slightly shorter than 48 inches, but they did fit perfectly.
Date published: 2016-10-11
Rated 1 out of 5 by from don't buy this bulbs I brought 4 bulbs only one of them is working don't buy this company bulbs
Date published: 2016-12-13
Rated 1 out of 5 by from Inferior Quality Replaced the bulbs in my garage shop lights with these. First, they are nowhere near as bright as the GE bulbs I have been using. Second, they buzz. I tried switching the bulb with the GE bulb right next to it and the buzzing followed the Philips bulb so it isn't my fixture. Third, as far as having a 24,000 hour life - ridiculous. These bulbs last 6 months or so, and that's turning them on for only a minute or two most days. Occasionally, the lights will be on longer if I'm working in the garage. I'll never buy these bulbs again. Most of the good reviews that are posted here are not from people who have used these bulbs for a few months. I'm going back to GE.
Date published: 2016-03-19
Rated 5 out of 5 by from Phillips T12 40-Watt Cool Supreme Linear Fluorescent ALTO Light Bulbs I purchase the 2-Pack are s... Phillips T12 40-Watt Cool Supreme Linear Fluorescent ALTO Light Bulbs I purchase the 2-Pack are so easy to install, the soft white lighting is nice to stand under while doing laundry and makes it so easy to find everything I'm looking for in my basement.I love these bulbs, I never purchase any other brands. I have had this one now up 2 months after replacing the last one for over 2 years, exactly the same type..This product highly meets my expectations. As you can see in my submitted photo especially hanging in the dark places of my home like my basement, Jesus likes it up there too for me. Thanks for offering me the opportunity to share my feedback review!
Date published: 2016-12-08
Rated 1 out of 5 by from I was disappointed that when I got the two bulbs home one did not work. Before that I went out a... I was disappointed that when I got the two bulbs home one did not work. Before that I went out a bought another light fixture thinking the ballast was bad on the old fixture when in fact the new bulb was bad. Be carful when buying these bulbs.
Date published: 2016-12-06
Rated 4 out of 5 by from Was easy to install and works as advertised. Very pleased. Was easy to install and works as advertised. Very pleased.
Date published: 2017-02-16
Rated 5 out of 5 by from Met my expectations ... Met my expectations
Date published: 2017-02-21
Rated 5 out of 5 by from Good product, good price Cool white is suitable for kitchen. Bought 4 to replace the ones that are old and worn out in the light fixture. The "Alto" line claims to contain less mercury than other products. Please be sure to recycle the old tubes, and Home Depot takes them.
Date published: 2014-02-16
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