Model # 391185

Internet #203315019

Philips 16 in. T9 40-Watt Cool White Plus (4100K) Circline Linear Fluorescent Light Bulb (12-Pack)


16 in. T9 40-Watt Cool White Plus (4100K) Circline Linear Fluorescent Light Bulb (12-Pack)

$6703 /case
(limit 35 per order)
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Frequently Bought Together

Product Overview

Philips 40-Watt 16 in. Cool White Circline Fluorescent Light Bulb delivers 2,500 Lumens of light and lasts up to 4 years or 12,000 life hours. It mounts to fixtures that accept 4-pin bulbs.

  • Brightness: 2,500 Lumens
  • Estimated yearly energy cost: $4.82 (based on 3 hours/day, 11¢/kWh. cost depend on rates and use)
  • Life: 11 years (based on 3 hours/day)
  • Light appearance: 4100K (cool white)
  • Energy used: 40-Watt
  • Lumens per Watt: 62.5
  • For indoor, commercial and residential use
  • Ideal for general purpose applications including bathrooms and kitchens
  • 4-Pin
  • Contains mercury: yes (for more info on clean-up and safe disposal, visit:
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

I don't need a case, How can I buy just 3 bulbs?

Asked by: eppiejane
You can buy individual bulbs online or in the store, but I found that the price for 12 was about the same as the price for about 4 individual bulbs. Not being one who can pass up a bargain I bought them in bulk and will just store them until I need them.
Answered by: Lisa
Date published: 2015-09-20
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Customer Reviews

16 in. T9 40-Watt Cool White Plus (4100K) Circline Linear Fluorescent Light Bulb (12-Pack) is rated 4.0 out of 5 by 3.
Rated 2 out of 5 by from Poor product life Bought October 2013, stopped working July 2014. Package says lasts up to 4 years, I didn't even get a year. This is the 3rd one I've bought. Guess I'll be going for a different brand. And yes I did read that the lifetime is effected by how many times it is turned on and off. It is generally turned on only during cooking and in the middle of the night. So its time on is limited to maybe 3 hours a day and is turned on maybe 4 times in a 24 hour period. :(
Date published: 2014-07-27
Rated 5 out of 5 by from Great value when bought in bulk. I only needed three or four, but discovered that I could buy 12 for the same price as about four individual bulbs, so of course I got the 12 pack. They last about a year so now I have to store them, but you could go together with others to buy them or sell them on Craig's List. Whatever.
Date published: 2014-12-17
Rated 5 out of 5 by from Great bulb No issues so far. Got the lot for a great price. These have been knocked in some reviews think they should check their ballast.
Date published: 2014-03-12
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