Philips 4 ft. T12 40-Watt Cool White Supreme (4100K) ALTO Linear Fluorescent Light Bulb (2-Pack)-422857 - The Home Depot


Model # 422857

Internet # 203466584

Store SKU # 158296

4 ft. T12 40-Watt Cool White Supreme (4100K) ALTO Linear Fluorescent Light Bulb (2-Pack)

Philips 4 ft. T12 40-Watt Cool White Supreme (4100K) ALTO Linear Fluorescent Light Bulb (2-Pack)

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

$9.97 / each


Model # 422857

Internet # 203466584

Store SKU # 158296

Philips Linear Fluorescent 40-Watt T12 cool white light bulb is ideal for use in garages, basements and workshops. It provides a cool white light that is ideal for a work-like environment. Philips Linear Fluorescent T12 light bulbs feature ALTO Lamp Technology

  • Brightness: 2600 lumens
  • Estimated yearly energy cost: 4.82 (based on 3 hrs/day, 11c/kwh. costs depend on rates and use )
  • Life: 24000 Hours
  • Light Appearance:4100K (Cool White)
  • Energy Used: 40 Watt
  • Lumens Per Watt: 65
  • For indoor, commercial and residential use
  • Ideal for general purpose needs as well as in garages, workshops or basements
  • T12, bipin
  • 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

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Approximate Lightbulb Length  48  Bulb Diameter (In.)  1.5 
Average Life (hours)  24000  Bulb Shape  Linear 
Bulb Type  Household  Commercial / Residential  Commercial / Residential 
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  Lighting Technology  Fluorescent 
Number in Package  2.0  Watt Equivalence 
Wattage (watts)  40 
Warranty / Certifications
ENERGY STAR Certified  No  Manufacturer Warranty  Yes, 7 Years. See "More Information tab" for details. 


Rated 2.5 out of 5 by 2 reviewers.
Rated 3.0 out of 5.0 by Failed after 3 years Bulbs worked well for 3 years and then one failed and the other one started flickering. The reason I give it 3 stars and not 1 star is because Philips actually stands behind their 7 years warranty and they were quick to send me a check to cover the purchase price. Even better, it was easy and it only took 3 minutes on the phone, no on hold music, no hard to navigate menus. October 17, 2013
Rated 2.0 out of 5.0 by Not bright enough as a single Bought these to go in a single fixture light strip over a work bench. For this application these are not bright enough. May work better in a double, or it could be the "Cool White". March 6, 2013
1-2 of 2


Store Exclusive. This item is available for purchase in select stores only.