Philips 4 ft. T12 40-Watt Cool White Supreme (4100K) ALTO Linear Fluorescent Light Bulb (10-Pack)-422675 at The Home Depot
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Model # 422675

Internet # 203466573

Store SKU # 153386

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

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

This item has been discontinued.
The Home Depot no longer carries this specific product.

$19.97 / case


Model # 422675

Internet # 203466573

Store SKU # 153386

Designed to help meet various general-purpose lighting needs around your home and office, the Philips 40-Watt 4 ft. T12 Linear Fluorescent Light Bulbs offer a cool white color with an output of 2600 lumens. These bulbs feature ALTO technology for low mercury content.

  • Brightness: 2600 lumens
  • Estimated yearly energy cost: 4.82 (Based on 3 hrs/day, 11c/kwh. costs depend on rates and use)
  • Life: 21.9 years (Based on 3 hrs/day)
  • Light Appearance: 4100k (cool white)
  • Energy used: 40 Watt
  • Lumens per watt: 65
  • For indoor, commercial and residential use
  • Ideal for general purpose applications including home and office
  • T12, bi-pin
  • Fluorescent lamp with ALTO technology has a reduced mercury content for an environmentally friendly alternative to standard bulbs
  • Contains mercury: yes (for more info on clean-up and safe disposal, visit:

Info & Guides

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Actual Color Temperature (K)  4100  Approximate Lightbulb Length  48 
Assembled Depth (in.)  49.63 in  Assembled Height (in.)  3.829 in 
Assembled Width (in.)  8.81 in  Average Life (hours)  24000 
Bulb Diameter (In.)  1.5  Bulb Type  Household 
Color Rendering Index  89.0  Commercial / Residential  Commercial / Residential 
Commercial / Residential  Commercial / Residential  ENERGY STAR Certified  No 
Indoor/Outdoor  Indoor  Light Bulb Base Code  Bi-Pin 
Light Bulb Base Type  Bi-Pin  Light Bulb Features  No additional features 
Light Bulb Shape Code  T12  Light Color  Cool White 
Light Output (lumens)  2600  Manufacturer Warranty  Yes, 7 Years. See "More Information tab" for details. 
Number in Package  10.0  Product Length (in.)  48 
Returnable  90-Day  Start-Up Type  Rapid 
Watt Equivalence  Wattage (watts)  40 


Rated 4.4 out of 5 by 32 reviewers.
Rated 5 out of 5 by As advertised These lightbulbs worked as advertised. Replaced old, burnt out light bulbs of the same spec and company (but older model). You can recycle the old bulbs at the same place you purchased too. These bulbs get dimmer over the course of their lifetimes, and the new ones I've installed are noticeably brighter than the older ones I have in other fixtures. I've only installed 2 of the 10 pack, as that's all I needed. I hope the others work too, but Home Depot is pretty good with duds so I'm not worried. September 23, 2014
Rated 5 out of 5 by 10 pack bulbs.... great price The ten pack is a great value and because it is a ten pack I always have extra bulbs in a container that helps to protect the bulbs from getting damaged September 2, 2014
Rated 4 out of 5 by cheap and works It's a light bulb. ... nothing special. I believe that this is the standard size of most florescent fixtures, but not sure... best to always double check. October 21, 2014
Rated 4 out of 5 by works good so far Works good so far. The ballest they are in have already burnt out. January 14, 2014
Rated 1 out of 5 by Poor Quality Bulbs blew out upon installation. I lost money as a result. October 7, 2014
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