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Model #387522

Store SKU #600146

Store SO SKU #600146

40-Watt 4 ft. Linear T12 ALTO Fluorescent Tube Light Bulb Daylight Deluxe (6500K) (10-Pack)

Includes 10 bulbs ($5.70 /bulb)
$56.98
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  • 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
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Product Details

Light your home or business with the Philips 40-Watt Daylight Deluxe Linear Fluorescent Light Bulb (F40T12/DX). Its bright arctic white glow helps rooms feel cooler for a refreshing environment. It works well in laundry rooms, bathrooms and more. ALTO technology fluorescent bulbs have lower mercury content making them more environmentally friendly.
  • Brightness: 2325 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: 6500K (Daylight)
  • Energy used: 40-Watt
  • Lumens per Watt: 58.2
  • T12 bulb shape, medium bi-pin base
  • Contains mercury: yes (for more info on cleanup and safe disposal, visit: epa.gov/cfl)
  • For indoor, commercial and residential use
  • 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.
  • Return Policy

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From the Manufacturer

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Specifications

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Questions & Answers

112Questions
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Q:Trying to replace this bulb but don?t know if it needs g5 or g12
by|Jan 2, 2023
1 Answer
Answer This Question

A:  This fluorescent tube has a g13 base

by|Jan 3, 2023
    caret
    Q:How do I know if I need G5 or G13 base? Replacing bulbs that are T12 34W but I don't see any indication of "G__".
    by|Nov 4, 2022
    1 Answer
    Answer This Question

    A:  This bulb has a G13 base (13mm spacing between the two pins)

    by|Nov 28, 2022
      caret
      Q:Do these lights have to warm up?
      by|Sep 14, 2022
      3 Answers
      Answer This Question

      A:  Depends on the ballast you have. I replaced mine with a newer version (Phillips Advance) that do have a warm up time. All the lamps instantly turn on about 1.5 seconds after throwing the switch. I read somewhere that longer start time saves the heater inside and extends bulb life.

      by|Sep 18, 2022

        A:  The light bulbs were as bright as they will ever be as soon as they are turned on!!

        by|Sep 18, 2022

          A:  This will ultimately depend on the ballast in your light fixture.

          by|Sep 19, 2022
            caret
            Q:My bulbs only lasted 4 years instead of 18 years as advertised. Problem with my fixture?
            by|Sep 7, 2022
            2 Answers
            Answer This Question

            A:  Your fixture is probably OK. I have had several different types of "new" bulbs that have not lasted nearly as advertised.

            by|Sep 8, 2022

              A:  The 18 year rating is based off of 3 hours of use per day.

              by|Sep 9, 2022
                Showing 1-4 of 112
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                Customer Reviews

                4.5 out of 5
                (2,696)
                • 4.5
                  out of 2,696 reviews
                • 90%recommend this product
                Filter by:
                Showing 1-10 of 2,696 reviews
                Horrible.....21.9 yr life expectancy????
                These bulbs are functional to say the least. they are bright as well easy to install. BUT don't be fooled by the 21.9 yr life expectancy of these bulbs based on 3 hr usage a day. I use these bulbs in my garage and it's on a auto on/auto off light switch. The most these bulbs see is about 1-2 hrs a day if that. With all that said, like other reviewers, these bulbs last 6-12 months at best. REALLY?!?! there's no way anyone is even coming close to a 22 yr life out of these bulbs. I understand that it's tested in a controlled environment but I can almost guarantee most people are getting under 5 years. And in my case 6-12 mo with minimal usage. Absolutely horrible. Who wants to change bulbs for the rest of their life......
                by
                  2 found this review helpful
                  The lights were installed In old light fixtures I had....
                  The lights were installed In old light fixtures I had. They are being used to grow seedlings for the garden. The plants are very happy!
                  by
                  • Verified Purchase
                  Nice and bright....
                  Nice and bright.
                  by
                  • Verified Purchase
                  Perfect light for waking up when it's still dark outside.
                  These light are super bright and perfect for a kitchen or any room where you want bright light. I installed them in my kitchen because that is where I drink my morning caffeine and they help me get going when it's still dark outside. I would not like the daylight ones in any room where you just want to hang out and relax because they are so bright.
                  by
                    • Recommended
                    3 found this review helpful
                    My husband and I live in an apartment and our kitchen light started to flicker. We decided that w...
                    My husband and I live in an apartment and our kitchen light started to flicker. We decided that we needed a replacement for this light. We bought a pack of two a few days ago. These lights are very easy to assemble and replace. They're also lightweight but very bright. There were several different packs of product in each individual packaging at the store. Since we just needed two, we bought the two pack one. I am very pleased with these lights because they were easy to find in the store. The light itself is white and it shines like a bright milky white color, which brightens my whole kitchen while I am cooking or baking. The price is quite decent too. Even a newbie can replace these lights, that's how easy it is to use them. The packaging was easy to open too. These lights are so much better than those yellow lights that you see in/around houses. I'd definitely recommend these to everyone.
                    by
                      • Recommended
                      3 found this review helpful
                      It was cheap, but only last for about 4 to 6 months.
                      It was cheap, but only last for about 4 to 6 months.
                      by
                      • Verified Purchase
                      • Recommended
                      7 found this review helpful
                      Good and bright lite
                      Good and bright lite
                      by
                      • Pro
                      • Verified Purchase
                      Bright and easy to install.
                      Bright and easy to install.
                      by
                      • DIY
                      • Verified Purchase
                      • Recommended
                      These bulbs are just what the wife and I need in the new light fixture we installed in our kitche...
                      These bulbs are just what the wife and I need in the new light fixture we installed in our kitchen. Just the right amount and 'type' of light.
                      by
                      • Verified Purchase
                      • Recommended
                      This product is long lasting and dependable especially in areas where light is a must. They are e...
                      This product is long lasting and dependable especially in areas where light is a must. They are economical in price compared to length of service. I use this product in my home in the kitchen and workshop. Very pleased with performance and service of this product.
                      by
                      • Verified Purchase
                      • Recommended
                      Showing 1-10 of 2,696 reviews

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                      Ratings
                      (2696)
                      (188)
                      (71)
                      (188)
                      Approximate Light Bulb Length4 ft.2 ft.4 ft.2 ft.
                      Light Bulb Shape CodeT12T12T8T12
                      Number of Bulbs Included10123030
                      Wattage (Watts)40202820
                      Wattage (watts)40202820
                      Light Bulb Base TypeFluorescent Pin BaseFluorescent Pin BaseFluorescent Pin BaseFluorescent Pin Base
                      Lighting TechnologyFluorescentFluorescentFluorescentFluorescent
                      Lumens (Brightness)23258502675850
                      Light Bulb Base CodeG13G5G5G5
                      THD SO SKU600146
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