Internet #203466589

Model # 423961

Store SKU #149296

0046677423964

40-Watt 4 ft. Linear T12 ALTO Fluorescent Tube Light Bulb Natural Daylight (5000K) (10-pack)

  • T12 linear fluorescent ideal for residential and commercial use
  • Natural daylight appearance ideal for concentrating and task work
  • T12 linear with ALTO technology minimizes mercury content
Includes 10 bulbs  ($2.83  /bulb)
$28.26
/case
Buy 5 or more  $19.78  /case
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Frequently Bought Together

Frequently Bought Together

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Product Overview

  • T12 linear fluorescent ideal for residential and commercial use
  • Natural daylight appearance ideal for concentrating and task work
  • T12 linear with ALTO technology minimizes mercury content
Brighten your home or business with these Philips 40-Watt 4 ft. T12 Natural Daylight Linear Fluorescent ALTO Light Bulbs (F40T12/Daylight/5000K). These indoor, bi-pin fluorescent bulbs are designed to fit your everyday, general-purpose lighting needs. They simulate natural full spectrum light, for any room in the house.
  • Brightness: 2500 Lumens
  • Estimated yearly energy cost: $4.82 (Based on 3-hrs/day, 11c/kWh. cost depend on rates and use)
  • Lasts up to 21.9 years (based on 3 hours/day)
  • Light appearance: 5000K (Natural Daylight)
  • Energy used: 40-Watt
  • Lumens per watt: 62.5
  • T12 bulb shape, medium bi-pin base
  • Contains mercury: yes (for more info on cleanup and safe disposal, visit: epa.gov/cfl)
  • Ideal for indoor general lighting purposes for commercial and residential use
  • Brighten up with the right light fixtures. Check out our Buying Guide for helpful tips.
  • Based on availability, color temperature on packaging may vary between natural and daylight, but all lamps provide the same color temperature output of 5000K
  • Click here for more information on Electronic Recycling Programs

Product Overview

  • T12 linear fluorescent ideal for residential and commercial use
  • Natural daylight appearance ideal for concentrating and task work
  • T12 linear with ALTO technology minimizes mercury content
Model #: 423961
Sku #: 149296
Internet #: 203466589

Brighten your home or business with these Philips 40-Watt 4 ft. T12 Natural Daylight Linear Fluorescent ALTO Light Bulbs (F40T12/Daylight/5000K). These indoor, bi-pin fluorescent bulbs are designed to fit your everyday, general-purpose lighting needs. They simulate natural full spectrum light, for any room in the house.

  • Brightness: 2500 Lumens
  • Estimated yearly energy cost: $4.82 (Based on 3-hrs/day, 11c/kWh. cost depend on rates and use)
  • Lasts up to 21.9 years (based on 3 hours/day)
  • Light appearance: 5000K (Natural Daylight)
  • Energy used: 40-Watt
  • Lumens per watt: 62.5
  • T12 bulb shape, medium bi-pin base
  • Contains mercury: yes (for more info on cleanup and safe disposal, visit: epa.gov/cfl)
  • Ideal for indoor general lighting purposes for commercial and residential use
  • Brighten up with the right light fixtures. Check out our Buying Guide for helpful tips.
  • Based on availability, color temperature on packaging may vary between natural and daylight, but all lamps provide the same color temperature output of 5000K
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
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Specifications

Dimensions

Approximate Light Bulb Length
4 ft.
Bulb Diameter (In.)
1.5
Product Length (in.)
48

Details

Actual Color Temperature (K)
5000
Average Life (hours)
24000
Bulb Construction
Glass
Bulb Shape
Linear
Bulb Type
Tube
Color Rendering Index (CRI)
85
Color Temperature
Daylight
Commercial / Residential
Commercial / Residential
Dimmable/Non-Dimmable
Non-Dimmable
Indoor/Outdoor
Indoor
Light Bulb Base Type
Bi-Pin
Light Bulb Features
No additional features
Light Bulb Shape Code
T12
Lighting Technology
Fluorescent
Lumens (Brightness)
2500
Number of Bulbs Included
10
Returnable
180-Day
Wattage (Watts)
40

Warranty / Certifications

Manufacturer Warranty
Yes, 7 Years. See "More Information tab" for details.

Specifications

Dimensions

Approximate Light Bulb Length
4 ft.
Bulb Diameter (In.)
1.5
Product Length (in.)
48

Details

Actual Color Temperature (K)
5000
Average Life (hours)
24000
Bulb Construction
Glass
Bulb Shape
Linear
Bulb Type
Tube
Color Rendering Index (CRI)
85
Color Temperature
Daylight
Commercial / Residential
Commercial / Residential
Dimmable/Non-Dimmable
Non-Dimmable
Indoor/Outdoor
Indoor
Light Bulb Base Type
Bi-Pin
Light Bulb Features
No additional features
Light Bulb Shape Code
T12
Lighting Technology
Fluorescent
Lumens (Brightness)
2500
Number of Bulbs Included
10
Returnable
180-Day
Wattage (Watts)
40

Warranty / Certifications

Manufacturer Warranty
Yes, 7 Years. See "More Information tab" for details.

Questions & Answers

Replacement bulbs are humming?

My previous Phillips bulbs did not produce a humming sound but the brand new replacement bulbs do. Checked online, and found it could be anything. What should I do?
Asked by: HandyDandyGirl
No my lights do not hum
Answered by: Mommyg69
Date published: 2020-06-03

Does this bulb have prongs on both ends

Does this bulb have prongs on both ends
Asked by: Boo
yes
Answered by: MarcG
Date published: 2020-05-12

Is this fluorscent bulbdesignated RAPID START?

Is this fluorscent bulbdesignated RAPID START?
Asked by: Artie
yes
Answered by: bdeau
Date published: 2020-03-10

Hi, is this F40T12 Natural Light 40w? Does this light bulb have "Alto" printed on it?

Hi, is this F40T12 Natural Light 40w? Does this light bulb have "Alto" printed on it?
Asked by: bulb
I think all Phillips bulbs are marked ALTO
Answered by: Bob
Date published: 2020-04-15
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