StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › Philips
Philips
Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb)

Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb)

Best price now

$36.99at AmazonChecked Nov 12

Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

Visit Amazon

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $36.99 at Amazon on Nov 12.

Our take on the Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb)

This is a 40-watt, 16-inch circular fluorescent tube that produces 2,500 lumens of cool white light at 4100K. It has a 4-pin G10q base and a rated life of 12,000 hours. It suits garages, workshops, kitchens, and offices with compatible fixtures. Compared with LED circline replacements, it costs less upfront but uses more energy and cannot dim.

Best forGarages and workshopsKitchens and officesDamp indoor locationsReplacing burnt-out circline tubes
Pros
  • Bright 2,500-lumen output
  • Long 12,000-hour rated life
  • Frosted glass for even light
  • Damp-rated for indoor use
  • Standard 4-pin G10q base
Cons
  • Not dimmable
  • Fluorescent technology uses more power than LED
  • Requires a compatible circline fixture
  • Cool white color may not suit all rooms

Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) prices at every store

  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $36.99Free shippingChecked Nov 12
    Visit Amazon

Also available at

  • PROARBCheck price at PROARB
  • BuildsupplyCheck price at Buildsupply

Store links may earn us a commission.

Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) price history

Lowest price we've seen: $36.99 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.

About the Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb)

This Philips 40-watt T9 circline fluorescent bulb is a 16-inch circular tube with a frosted glass finish. It gives even, diffused light in cool white at 4100K and produces 2,500 lumens.

It uses a 4-pin G10Q base and fits fixtures that accept a 16-inch T9 circline tube. It is non-dimmable and is rated for indoor use in damp locations such as garages, workshops, basements and kitchens. Rated life is up to 12,000 hours, or about 11 years at 3 hours of use per day.

Wattage
40 W
Shape
Circline, T9
Outer diameter
16 in
Tube diameter
1.125 in
Base
4-pin G10Q
Technology
Fluorescent
Color temperature
Cool White 4100K (listed as 4000K on the spec sheet)
Brightness
2,500 lumens
Efficacy
62.5 lumens per watt
CRI
85
Rated life
12,000 hours
Voltage
120 V
Dimmable
No
Location
Indoor; damp rated
Max temperature
113°F
Ballast
Type A
Control
Switch
Finish
Frosted
Material
Glass
Mercury
Contains mercury
Model
FC16T9/Cool White Plus
In the box
1 bulb

Questions and answers

Is this bulb dimmable?
No, it is a non-dimmable fluorescent tube.
What fixtures does it fit?
It fits fixtures with a 4-pin G10q socket designed for 16-inch circline tubes.
How bright is it?
It produces 2,500 lumens, roughly equivalent to a 150-watt incandescent bulb.
What is the color temperature?
It is 4100K, a cool white light.
How long does it last?
It is rated for up to 12,000 hours, about 11 years at 3 hours per day.
Can it be used outdoors?
It is damp-rated for indoor locations but not for wet or outdoor use.
Where is the Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb) cheapest?
At Amazon, for $36.99, as of our latest check.
Where can I buy the Philips 40-Watt 16 in. Circline T9 Fluorescent Tube Light Bulb, Cool White 4100K (1-Bulb)?
3 stores we checked sell it, including Amazon, PROARB, Buildsupply.

Shoppers also compared

  • P
    Philips FC8T9 22W T9 G10Q 4100K Cool White Circline Fluorescent Bulb
    Philips FC8T9 22W T9 G10Q 4100K Cool White Circline Fluorescent Bulb
  • P
    Philips 22W T9 Circline Fluorescent Bulb
    Philips 22W T9 Circline Fluorescent Bulb
  • F
    Feit Electric 8 in. 15-Watt T9 Cool White 4100K G10Q Circline LED Light Bulb
    Feit Electric 8 in. 15-Watt T9 Cool White 4100K G10Q Circline LED Light Bulb
  • P
    Philips 32W T9 Circline Fluorescent Bulb, 12-Inch Outer Diameter, 4-Pin (GX10q)
    Philips 32W T9 Circline Fluorescent Bulb, 12-Inch Outer Diameter, 4-Pin (GX10q)
  • G
    GE Lighting 22W T9 Circline Fluorescent Bulb
    GE Lighting 22W T9 Circline Fluorescent Bulb
  • S
    Sylvania 22W T9 Circline Fluorescent Lamp
    Sylvania 22W T9 Circline Fluorescent Lamp
  • G
    G E Lighting 33893 40-Watt Cool White Circline Tube Fluorescent Light Bulb
    G E Lighting 33893 40-Watt Cool White Circline Tube Fluorescent Light Bulb
  • S
    Sunpark LC-12014T Circline Lamp Compact Electronic Fluorescent Ballast With Circline Lamp Plug 120 Volt
    Sunpark LC-12014T Circline Lamp Compact Electronic Fluorescent Ballast With Circline Lamp Plug 120 Volt

More from Philips

  • P
    Philips 32-Watt 12 in. T9 Circline Linear Fluorescent Tube Light Bulb, Daylight Deluxe (6500K)
    Philips 32-Watt 12 in. T9 Circline Linear Fluorescent Tube Light Bulb, Daylight Deluxe (6500K)
  • C
    Circular Fluorescent Tube 32w T9 G10q Philips Coolwhite/840 Light Bulb - 305mm
    Circular Fluorescent Tube 32w T9 G10q Philips Coolwhite/840 Light Bulb - 305mm
  • P
    Philips 14 Watt T12 Medium Bi-Pin Fluorescent Tube Light Bulb
    Philips 14 Watt T12 Medium Bi-Pin Fluorescent Tube Light Bulb
  • P
    Philips 32w C-T9 Soft White G10q Circline Fluorescent Light Bulb
    Philips 32w C-T9 Soft White G10q Circline Fluorescent Light Bulb
  • P
    Philips 391169 FC8T9 22W 8-Inch T9 Circline Fluorescent Bulb, Cool White, 4-Pin Base
Philips 391169 FC8T9 22W 8-Inch T9 Circline Fluorescent Bulb, Cool White, 4-Pin Base
  • P
    Philips 148742 PL-S 7W/850/2P/ALTO 7 watt 120 volt PL-S 2-Pin Base 5000K Natural White CFL
    Philips 148742 PL-S 7W/850/2P/ALTO 7 watt 120 volt PL-S 2-Pin Base 5000K Natural White CFL
  • P
    Philips Circular Fluorescent Tube 22w T9 G10q Daylight/865 Light Bulb - 216mm - 6500K - TLE 22W/865
    Philips Circular Fluorescent Tube 22w T9 G10q Daylight/865 Light Bulb - 216mm - 6500K - TLE 22W/865
  • P
    PHILIPS 7W MR16 LED Bright White 3000K Flood 90CRI Bulb - 42w equiv.
    PHILIPS 7W MR16 LED Bright White 3000K Flood 90CRI Bulb - 42w equiv.
  • All Philips deals and products →

    More fluorescent bulbs

    • 2
      22-Watt Cool White Circline Tube Fluorescent Light Bulb
      22-Watt Cool White Circline Tube Fluorescent Light Bulb
    • 3
      32-Watt Cool White Circline Tube Fluorescent Light Bulb
      32-Watt Cool White Circline Tube Fluorescent Light Bulb
    • C
      Circline Bulb 12" Daylight Satco
      Circline Bulb 12" Daylight Satco
    • S
      Satco 32W 12 In. Cool White T9 Circline 4-Pin Fluorescent Tube Light Bulb
      Satco 32W 12 In. Cool White T9 Circline 4-Pin Fluorescent Tube Light Bulb
    • 4
      40-Watt Cool White Circline Tube Fluorescent Light Bulb
      40-Watt Cool White Circline Tube Fluorescent Light Bulb
    • K
      Keystone KTL-FC12T9-CW-DP FC12T9, 4100K, 60 CRI, Circline Lamps T9 Circular Fluorescent Lamps
      Keystone KTL-FC12T9-CW-DP FC12T9, 4100K, 60 CRI, Circline Lamps T9 Circular Fluorescent Lamps
    • S
      Sylvania FC8T9 22W 8in T9 4100K Cool White 1050Lm G10Q Circline Fluorescent Bulb
      Sylvania FC8T9 22W 8in T9 4100K Cool White 1050Lm G10Q Circline Fluorescent Bulb
    • S
      Sylvania FC8T9 22W 8in T9 3000K Bright White 1100Lm G10Q Circline Fluorescent Bulb
      Sylvania FC8T9 22W 8in T9 3000K Bright White 1100Lm G10Q Circline Fluorescent Bulb