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


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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Approximate Lightbulb Length  48  Bulb Diameter (In.)  1.5 
Product Length (in.)  48 
Actual Color Temperature (K)  4100  Average Life (hours)  24000 
Bulb Shape  Linear  Bulb Type  Household 
Color Rendering Index  89.0  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  10.0  Returnable  90-Day 
Start-Up Type  Rapid  Watt Equivalence 
Wattage (watts)  40 
Warranty / Certifications
ENERGY STAR Certified  No  Manufacturer Warranty  Yes, 7 Years. See "More Information tab" for details. 


Rated 4.5 out of 5 by 56 reviewers.
Rated 5.0 out of 5.0 by Fluorescent Tube Lights These bulbs provide excellent lighting in our leasing office and apartment kitchens March 3, 2015
Rated 5.0 out of 5.0 by Light-ning fast and helpful folks Great price plus always helpful staff.Great attitude. April 8, 2015
Rated 4.0 out of 5.0 by Bulbs I have used these bulbs before and have seldom had any problem with them, so why change a good thing! Thanks April 7, 2015
Rated 5.0 out of 5.0 by bulbs a friend told me what to buy so I did. And I thought bulbs were just bulbs March 24, 2015
Rated 5.0 out of 5.0 by Excellent Value We stick with this same bulb in all our fixtures. The color is good and the price is right March 12, 2015
Rated 5.0 out of 5.0 by They light up my life Thes bulbs are awesome, they light up my life, they give me hope to carry on.... March 10, 2015
Rated 4.0 out of 5.0 by package came great - no breakage...will use Home Depot again and this product These bulbs are great in our warehouse - they are bright but do not give a headache!! March 10, 2015
Rated 5.0 out of 5.0 by 40 Watt fluorescent lamps The 10 pack is a handy dispenser and a good storage rack. The price was excellent with free shipping. How good is that? Lamps appear to be of good quality. Fluorescents seem to be getting scarce to get, and when this package was offered, on sale by Home Depot, I grabbed the opportunity to buy them. Great value! February 25, 2015
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