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Model # 409748

Internet # 202504341

Store SKU # 209974

21 in. T5 13-Watt Cool White (4100K) Linear Fluorescent Light Bulb

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

$8.37 /  each


Model # 409748

Internet # 202504341

Store SKU # 209974

The Philips 13-Watt 21 in. T5 Cool White Linear Fluorescent Light Bulb provides a cool, white light that works well for both residential and commercial settings. This T5 linear fluorescent bulb has a medium, bi-pin base, and can lasts for up to 3 years. It is meant for indoor use.

  • Brightness: 820 lumens
  • Estimated yearly energy cost: $1.57
  • Life: 6.8 years (Based on 3 hrs/day)
  • Light appearance: 4100K (cool white)
  • Energy used: 13 Watt
  • Lumens per watt: 63
  • Contain less mercury than standard fluorescent bulbs
  • For general use including indoor, commercial and residential use and ideal for home or office for versatility
  • Bi-Pin
  • Contains mercury: yes (for more info on clean-up and safe disposal, visit:

Info & Guides

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Approximate Lightbulb Length 
Bulb Diameter (In.) 
Average Life (hours) 
Bulb Shape 
Bulb Type 
Commercial / Residential 
Commercial / Residential 
Light Bulb Base Code 
Light Bulb Base Type 
Light Bulb Features 
No additional features 
Light Bulb Shape Code 
Light Color 
Cool White 
Light Output (lumens) 
Lighting Technology 
Number in Package 
Watt Equivalence 
Wattage (watts) 
Warranty / Certifications
ENERGY STAR Certified 
Manufacturer Warranty 
Yes, 6.8 years. Please see package for details. 


Rated 3.6 out of 5 by 18 reviewers.
Rated 5.0 out of 5.0 by Very nice and puts out so much more light I love the cool light that this bulb gives, it is bright enough to read by 6 feet up on the ceiling of our porch. It is so much brighter than ordinary bulbs. April 21, 2015
Rated 3.0 out of 5.0 by Replacement Have not used the bulb as of yet. I am keeping it as a spare. April 8, 2015
Rated 5.0 out of 5.0 by Very happy Actually, I had HD install the storm door and my installation man, Johnny, was great. Went out of his way to make sure I was happy with the work. March 24, 2015
Rated 2.0 out of 5.0 by The one I got appeared to be "used" When I got home with the bulb and took it out of the package, which appeared to be opened before, the bulb had dark spots at each end reminisence of a used bulb. It worked, but for how long, remains to be seen. August 5, 2014
Rated 5.0 out of 5.0 by Ideal for under cabinet kitchen counter lighting We use these bulbs for our under cabinet kitchen countertop lighting. The "cool" light is better suited for the type of light that you need in a kitchen. We have several different size fixtures under our cabinets and all the various size bulbs are available at Home Depot. They also carry the "warm" variety, if you prefer that. February 2, 2015
Rated 3.0 out of 5.0 by replacement Had to use this because it fits the fixture that I have. January 13, 2015
Rated 5.0 out of 5.0 by Easy to locate at the depot. lower price than in the past but last one did not last as long. January 6, 2015
Rated 2.0 out of 5.0 by Bulbs are disappointing Bulbs do not last very long and I have to change them too often. August 5, 2014
  • 2015-05-29T14:18:21.859-05:00
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