Model # 391169

Internet #100053367

Store SKU #154304

Philips 8 in. T9 22-Watt Cool White (4100K) Circline Fluorescent Bulb


8 in. T9 22-Watt Cool White (4100K) Circline Fluorescent Bulb

$9.47 /each
(limit 35 per order)

Frequently Bought Together

Product Overview

Ideal for the garage, workshop or basement, the Philips 22-Watt 8 in. T9 Cool White Circline Fluorescent Bulb delivers 1,000 lumens and lasts up to 4 years or 12,000 life hours. It features a reduced mercury content and installs to fixtures that accept 4-pin base bulbs.

  • Brightness: 1000 Lumens
  • Estimated yearly energy cost: $2.65
  • Life: 11 years (Based on 3 hrs/day)
  • Light appearance: 4100K (cool white)
  • Energy used: 22 watts
  • Lumens per watt: 45.4
  • T9 circline shape
  • Contain less mercury than standard fluorescent bulbs
  • For general use including indoor, commercial and residential use and ideal for home or office for versatility
  • 4-Pin
  • Contains mercury: yes (for more info on clean-up and safe disposal, visit:

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

What diameter is it

Asked by: Bob
It states at the very beginning of the description that the diameter is "8 in."
Answered by: Phoebe
Date published: 2017-04-15

Do you have the ballast that goes with lamps

T9 4 prongs on each side to fit round 12" and 8"
Asked by: Jay183
Thank you for your recent inquiry with The Home Depot, Jay183. Please click the following link to view replacement ballasts: We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
Answered by: THDSupport
Date published: 2016-12-30

is this bulb rapid start?

Asked by: ed
Yes it is a rapid start.
Answered by: Consumer Lighting Team
Date published: 2017-04-15

So, 8 inches = 210x150x30mm am i right?

So, 8 inches = 210x150x30mm am i right?
Asked by: Luckas
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Customer Reviews

8 in. T9 22-Watt Cool White (4100K) Circline Fluorescent Bulb is rated 4.0 out of 5 by 3.
Rated 3 out of 5 by from Inside Dia is smaller. The inside diameter of these bulbs has gotten smaller, I have a Dazor Magnifying light, THE Old old USA made bulbs would Drop in, then a few years ago the imports were a tight fit NOW its a NO GO ans I guess I will have to modify the light to make them fit.........
Date published: 2016-05-27
Rated 5 out of 5 by from nice kitchen light bulb I purchased this light bulb for my kitchen. It puts out very nice light and I would buy again.
Date published: 2014-02-26
Rated 4 out of 5 by from Lasted 3 years I love the brightness of this light bulb. I use it in a ceiling lamp I bought at Home Depot. It takes 2 circular bulbs.
Date published: 2016-09-05
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