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
$697 /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
The marking underneath the label determines the type of bulb. E.g.: F40T12/DX MEANS its a 40 watt, T12 bipin and the DX means it's the daylight deluxe type as opposed to soft white, cool white, etc. Also a T8 would mean it's a 32 watt bulb which has a smaller circumference than the T12. Lastly the length is 48", not 46". This is a standard size.
Answered by: Melloman
Date published: 2017-04-24

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

Asked by: Fog
There is a big difference in the lumen. The lumen is determined by the temperature which is measured in Kelvin (e.g 3500k will be less brighter than a 6500k). The lumen is the measure by the light brightness or candle power from different distances measured in feet.
Answered by: Melloman
Date published: 2017-04-24

Is this operable in colder temperatures?

Asked by: Marty
It is operable in extreme hot and cold temperatures
Answered by: Melloman
Date published: 2017-04-24

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
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Customer Reviews

4 ft. T12 40-Watt Cool White Supreme Linear Fluorescent ALTO Light Bulb (2-Pack) is rated 3.9 out of 5 by 13.
Rated 5 out of 5 by from Great bulb and seems to last quite a long time. Happy with the light. Sometimes those pin ends ca... Great bulb and seems to last quite a long time. Happy with the light. Sometimes those pin ends can be a little tricky to install. Usually you have to get the pins aligned in the socket just right, and then give the whole bulb a 90 degree twist to get the pins locked in properly.
Date published: 2017-03-17
Rated 5 out of 5 by from We are using these bulbs in our greenhouse and they are on all the time. They have met our expec... We are using these bulbs in our greenhouse and they are on all the time. They have met our expectations.
Date published: 2017-04-11
Rated 5 out of 5 by from It's doing its intended job; lighting up my laundry space. Yay me! It's doing its intended job; lighting up my laundry space. Yay me!
Date published: 2017-05-30
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 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 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
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
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