Internet #203466589

Model # 423961

Store SKU #149296

0046677423964

Philips

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
Loading Options
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

Frequently Bought Together

+
+

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

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Key Features

Product Overview
Key Features
  • 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

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar

Compare Similar Products
Brand Philips Philips Philips Philips
Name 8 ft. 110-Watt T12 Cool White 4100K High Output Linear Fluorescent Tube Light Bulb (2-Pack) 8 ft. T12 75-Watt Daylight Deluxe Linear Fluorescent Tube Light Bulb (2-Pack) 40-Watt 4 ft. Linear T12 ALTO Fluorescent Tube Light Bulb Natural Daylight (5000K) (10-pack) 32-Watt 4 ft. Linear T8 Fluorescent Tube Light Bulb Natural Daylight (5000K) (10-Pack)
Price
$16.01
$17.79
$28.26 /case
$29.98 /case
Ratings (67) (114) (106) (74)
View Product View Product View Product View Product

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
Color Temperature
Daylight
Commercial / Residential
Commercial / Residential
Dimmable/Non-Dimmable
Non-Dimmable
Indoor/Outdoor
Indoor
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
90-Day
Specialty Bulb Type
Specialty
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
Color Temperature
Daylight
Commercial / Residential
Commercial / Residential
Dimmable/Non-Dimmable
Non-Dimmable
Indoor/Outdoor
Indoor
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
90-Day
Specialty Bulb Type
Specialty
Wattage (Watts)
40

Warranty / Certifications

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

Questions & Answers

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
Yes, this product is 40W and does have ALTO on the packaging.
Answered by: CommunityAnswer
Date published: 2018-11-06

After replacing the light bulbs in my kitchen, three weeks later, they don't come on, they just f...

After replacing the light bulbs in my kitchen, three weeks later, they don't come on, they just flicker...
Asked by: mimi1950
You may want to check the ballast and make also make sure you installed them correctly. See if you have good contact at both ends of the tubes.
Answered by: Gman1010
Date published: 2019-07-02

read below

is this the Philips Fluorescent Light Bulb 40 watt - 48" - T12 - Medium Bi-Pin (G13) Base - 5,000K - Colortone 50 - Natural Sunshine
Asked by: doggster
Yes, as close as you can get.
Answered by: Ray
Date published: 2019-08-14

What's the CRI of this bulb?

It's printed clearly on the box/packaging it comes in, but no photo of this Philips 5000K T12 bulb in it's packaging on this website.
Asked by: Eric
Yes, these used to be the best "looking" bulbs you could buy, with a CRI of 92 - and 5000K is not too "warm" - yellow - or "cool" - blue. However, for the last year or two when you get to the store you find Philips has changed their spec and this is now a 90 CRI bulb. Still way better for your kitchen or foyer or laundry room than a CRI 75 shop light, but 90 CRI bulbs are available at many more places than the 92 CRI bulbs were - and I haven't found any 92 CRI bulbs recently anywhere at any price.
Answered by: JoeBob
Date published: 2018-04-03
  • y_2019, m_8, d_20, h_2CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_8
  • loc_, sid_203466589, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 27ms
  • QUESTIONS, PRODUCT

Customer Reviews

40-Watt 4 ft. Linear T12 ALTO Fluorescent Tube Light Bulb Natural Daylight (5000K) (10-pack) is rated 4.4 out of 5 by 106.
Rated 5 out of 5 by from Purchased as replacements. Cool white works well in bath and over kitchen sink areas. Easy to ins... Purchased as replacements. Cool white works well in bath and over kitchen sink areas. Easy to install. Tip: For the hard to reach neck breaking areas,use a magic marker to mark area where end pins are. That way you can easily snap them into place without having to roll the light trying to hit the grooves.
Date published: 2019-07-29
Rated 5 out of 5 by from The product is good. I DO NOT want to buy 10 bulbs when I ONLY need 2. Home Depot is ripping off ... The product is good. I DO NOT want to buy 10 bulbs when I ONLY need 2. Home Depot is ripping off the consumer when you force the customer to buy more than he wants to buy!!! I do NOT like being forced to buy more than I need. Next time I will purchase these bulbs from your competitors!!! AC
Date published: 2019-05-28
Rated 5 out of 5 by from My daughter was complaining that the normal Bath and Kitchen bulbs gave off orange light. The C... My daughter was complaining that the normal Bath and Kitchen bulbs gave off orange light. The Cool Bulbs were too blue. This is the only bulb that gave her bright light in the kitchen that did not bother her eyes. Very nice bulb, very bright natural daylight.
Date published: 2019-07-09
Rated 5 out of 5 by from These tubes replaced ones that were in use for 23... These tubes replaced ones that were in use for 23 yrs. These are so much brighter, my cabinets are black walnut so my kitchen needs more light. These are great!
Date published: 2019-08-13
Rated 5 out of 5 by from We have been using these 40 watt 4 ft. Linear... We have been using these 40 watt 4 ft. Linear T12 ALTO Fluorescent tube lights for years and are very satisfied with!
Date published: 2019-08-14
Rated 5 out of 5 by from The bulbs were easily installed and operating well.... The bulbs were easily installed and operating well.
Date published: 2019-07-30
Rated 5 out of 5 by from Just what I needed at an affordable price! Just what I needed at an affordable price!
Date published: 2019-07-23
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2019-06-05
  • y_2019, m_8, d_20, h_2
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_106
  • loc_, sid_203466589, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 28ms
  • REVIEWS, PRODUCT