Philips 4 ft. T8 32-Watt Natural Light (5000K) ALTO Linear Fluorescent Light Bulb (2-Pack)-409664 - The Home Depot


Model # 409664

Internet # 100613779

Store SKU # 971754

4 ft. T8 32-Watt Natural Light (5000K) ALTO Linear Fluorescent Light Bulb (2-Pack)

Philips 4 ft. T8 32-Watt Natural Light (5000K) ALTO Linear Fluorescent Light Bulb (2-Pack)

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

$9.94 / each


Model # 409664

Internet # 100613779

Store SKU # 971754

Store SO SKU # 971754

Illuminate your home or business with bright, natural light using these Philips ALTO 32-Watt 4 ft. natural light Linear Fluorescent Light Bulbs (2-Pack) The bulbs produce 2,950 lumens of light and last for an average of 30,000 hours for extended use. The bulbs consume just 32 watts of energy and feature a T8 shape and bi-pin base.

  • Brightness: 2,950 lumens
  • Estimated year energy cost: $3.85 (Based on 3hrs/day, 11c/kwh. Costs depend on rates and use.)
  • Life: 27.4 years (Based on 3 hrs/day)
  • Light appearance: 5000K (natural light)
  • Energy used: 32 watts
  • Lumens per watt: 92.2
  • Contain less mercury than standard fluorescent bulbs.
  • For general use including indoor, commercial and residential use. 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  48  Assembled Depth (in.)  48.630 in 
Assembled Height (in.)  1.06 in  Assembled Width (in.)  2.06 in 
Bulb Diameter (In.)  1.0 
Average Life (hours)  36000  Bulb Shape  Linear 
Bulb Type  Household  Commercial / Residential  Commercial / Residential 
Hazardous Code  Pending - AP Review (Hazmat DCS) 10-12-2010, YOW Restriction pending AP review  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  T8 
Light Color  Other Colors  Light Output (lumens)  2950 
Lighting Technology  Fluorescent  Number in Package 
Returnable  90-Day  Specialty Bulb Type  Household / General Purpose 
Watt Equivalence  Wattage (watts)  32 
Warranty / Certifications
ENERGY STAR Certified  No  Manufacturer Warranty  Yes 8 years. Please see package for details. 


Rated 4.1 out of 5 by 8 reviewers.
Rated 3 out of 5 by Lumens Specifications Listed Incorrect This item only produces 2850 Lumens not 2950. Also the model number ending 664 refers to 6500K Daylight Deluxe Bulbs which are also 2850 lumens;. However they do have a 10 pack off 6500K Daylight Deluxe that specify 2950 lumens as LT85's. I've spent over 100 dollars to get bulbs that specifications listed are not met. Using spectrometer and digital light meters. Still I've managed to get close to what is needed for my project, but what a waste. In the end it would have only cost me around 40 dollars if the specifications listed were anywhere close to item specifications. July 25, 2014
Rated 5 out of 5 Very good for bedrooms or any other location in any house hold. i bought these for a shop light i bought for my bed room and they are very bright they light up the whole bedroom with one bulb i would recomend this to anyone who is looking for a bright light like these. April 30, 2012
Rated 5 out of 5 by SUPER BRIGHT Very bright. Love 'em. Glad i went with 2950 lumens. If you want brilliant white light, these are the ones. February 14, 2012
Rated 1 out of 5 by Stay clear of this brand The bulbs failed after less than 100 hours, not only the first time but the 2nd and 3rd time, yes, I was a sucker and replaced them over and over, thought it may have been the fixture, replaced the fixture and the bulbs failed again, I contacted Phillips to inquire about the problem, was told that I may be operating the light improperly, really, how does a person turn a light on or off improperly? Go with another brand if you want to see in the dark. January 28, 2014
Rated 5 out of 5 by Very bright! I found this lights to be about 50% brighter than my previous 40 watt T12s. Very good for the kitchen and any other place where natural light is needed. I just hope it lasts as long as they say it would. June 2, 2014
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Store Exclusive. This item is available for purchase in select stores only.