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Internet # 321241483

Model # T1248/840/LED/10

Store SKU # 1008153663

20-Watt 4 ft. T12 G13 Type A Plug and Play Linear LED Tube Light Bulb, Cool White 4000K (10-Pack)

Includes 10 bulbs
$70.00
($7.00 /bulb)
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  • Energy-efficient LED bulb uses 20W to replace standard 40W bulb
  • Cool White LED tube lamp provides a clean, neutral white light
  • T12 LED tube operating on most magnetic or electronic ballasts
  • View More Details
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Product Details

About This Product

Feit Electric's 20-watt (40-watt Equivalent) Direct Replacement (Type A) Non-Dimmable Linear LED Tubes replace F40T12 or T12 fluorescent and LED tubes. They work with most existing ballasts for quick and easy installation, with no rewiring necessary. Each Linear LED light produces 1800 lumens, emitting the same light output level as traditional bulbs while using 50% less energy than traditional fluorescent linear lights. These versatile 4000K Cool White lights provide clean, neutral white light for both living and workspaces. Use them for multi-purpose lighting or task lighting wherever it is important to feel refreshed and ready to get things done. An ideal choice for most fluorescent linear tube replacement applications, use them in offices, garages, workspaces, warehouses, and more. T1248/840/LED/10 lights turn on instantly, offering flicker-free full illumination with no warmup time compared to fluorescent tubes. They are mercury-free, with a shatter-resistant coating for safe and easy disposal. Each high-quality bulb offers accurate color-rendering, for more vibrant, true-to-life colors. Lower heat emission extends the life of the tube and ends do not turn black or burn with age. Enjoy lower maintenance costs compared to traditional fluorescent linear lights. The estimated energy cost is only $2.41 per year. Switch to Type A LED linear lights for your space and get up to 35,000 hours of superior light. That's 31.9 years based on 3 hours of daily use.

Highlights

  • Shop All Type-A Plug and Play Linear LED Tube Light Bulbs
  • 4 ft. T12 tube LED light bulb with G13 base
  • Bulb tube type: type A plug and play direct replacement
  • Brightness: 1,800 lumens
  • Estimated yearly energy cost: $2.41 (based on 3 hours/day, 11/kwh. costs depend on rates and use)
  • Average life: Up to 31.9 years (based on 3 hours/day)
  • Light appearance: 4000K (cool white)
  • Energy used: 20-Watt
  • Input line voltage: 120-Volt
  • Lumens per watt: 90
  • Uses 50% less energy compared to a standard fluorescent lamp
  • Safety list: UL Listed
  • Works with most magnetic or electronic ballasts, no rewiring is required
  • Shatter-resistant and mercury-free, no special disposal is required
  • Flicker-free, instant ON illumination at full brightness
  • Ideal for various applications including office, garage, warehouse and basement
  • Usage: troffer, commercial and residential indoor use
  • Non-dimmable
  • Included 10 bulbs
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 321241483

Model # T1248/840/LED/10

Store SKU # 1008153663

Specifications

Dimensions

Product Diameter (in.)

1.5 in

Product Length (in.)

48 in

Details

Average Life (hours)

35000

Ballast Compatibility

Type A

Bulb Color

White

Bulb Finish

Frosted

Bulb Material

Glass

Bulb Shape

Linear

Color Rendering Index (CRI)

80

Color Temperature

Cool White (4000K)

Control Type

Switch

Dimmable Capability

Non Dimmable

Indoor/Outdoor

Indoor

Light Bulb Base Code

G13

Light Bulb Base Type

Medium Bi-Pin

Light Bulb Features

Enclosed Fixture Rated, Energy Saving, Plug and Play

Light Bulb Shape Code

T12

Lighting Technology

LED

Max. Operating Temperature (F)

113 °F

Number of Bulbs Included

10

Rated

Damp Rated

Returnable

90-Day

Volt (v)

120

Wattage (Watts)

20

Wattage Equivalence

40

Warranty / Certifications

Certifications and Listings

UL Listed

Manufacturer Warranty

5 years

Questions & Answers

Are these bulbs dimmable?
BySep 17, 2025
1 Answer | 
Answer This Question

Thank you for your question, these are not dimmable.

By|Sep 17, 2025


    would these work if my ballast is bad?
    ByJan 10, 2025
    1 Answer | 
    Answer This Question

    Thank you for your question, this unit will need a properly functioning ballast to operate.

    By|Jan 13, 2025


      I have older (20 year old tube light housing that is currently using a 4 4ft t12 40watt bulbs. Can I use these t12 20 watts as a replacement?
      ByAug 31, 2024
      2 Answers | 
      Answer This Question

      I looked very closely into what type of ballasts I have in my old 4-tube fixture. I had two different but similar models of magnetic ballast supplying 2 bulbs each. Both ballast model numbers were listed in the compatibility guide. They work great.

      By|Apr 18, 2026

        (1)

        Thank you for your feedback, we are sorry to hear about the issue with your Feit Electric product, at your convenience feel free to send us an email for assistance, you can reach us at info@feit.com or visit our website for trouble-shooting tips and ballast compatibility: https://www.feit.com/pages/ballast-compatibility

        By|Sep 4, 2024


          Will these work in a fixture that has LED drivers in it?
          ByApr 25, 2024
          1 Answer | 
          Answer This Question

          Thank you for your question, at your convenience feel free to send us an email for assistance, you can reach us at info@feit.com or visit our website for ballast compatibility: https://www.feit.com/pages/ballast-compatibility

          By|Apr 26, 2024


            Does this require an FS-2 starter? I am going to put this on a ballast that has a plug for a starter.
            BySep 10, 2023
            1 Answer | 
            Answer This Question

            Thank you for your feedback, we are sorry to hear about the issue with your Feit Electric product, at your convenience feel free to send us an email for assistance, you can reach us at info@feit.com or visit our website for trouble-shooting tips and self-help options.

            By|Sep 12, 2023


              Will these work with shunted and non-shunted lamp holders?
              ByAug 29, 2023
              1 Answer | 
              Answer This Question

              Thank you for your question, Plug-and-play LED tubes require shunted lamp sockets.

              By|Aug 10, 2024


                What would cause the lights to start humming? When new they were quiet, now after a couple of hours of short time usage, they have become noisy.
                ByApr 19, 2023
                1 Answer | 
                Answer This Question

                Thank you for your feedback, we are sorry to hear about the issue with your Feit Electric product, at your convenience feel free to send us an email for assistance, you can reach us at info@feit.com or visit our website for trouble-shooting tips and self-help options.

                By|Nov 10, 2025


                  The descriptions states that these DO NOT require a working ballast but when someone asked the question a ?Feit expert? responded that a ?working ballast? was necessary. Which information is correct?Want to replace F40T12 flourescent bulbs.Will these work
                  ByJan 20, 2023
                  2 Answers | 
                  Answer This Question

                  It seems that they don't need a working ballast. I just installed these in my garage lights and the ballasts were questionable and the LED tubes turned right on.

                  By|Oct 30, 2025

                    (2)

                    Thank you for your question , this plug and play tube is TYPE A that require a compatible ballast. Please see link for ballast compatible list : https://www.feit.com/ballast_compatibility/

                    By|Apr 12, 2025

                      (3)

                      Viewing 1-8 of 10

                      Customer Reviews

                      4.3 out of 5

                      • 4.3 out of 1,030 reviews
                      • 50% recommend this product
                      Filter by:
                      Showing 1-10 of 1,030 reviews
                      I wasn’t sure which 4ft LED tube was the right one to replace my old fluorescent lights. Went to the store and checked them all out and picked this one. I picked the right one. It connected the same as the old, it lights up immediately when turned on and is a good brightness for my kitchen. As the other two tubes go out I will replace with these. In the picture the new one is in the middle.
                      by
                      • Verified Purchase
                      So far so good. No blinking when they go on. Light is the he same as the fluorescent. Just make sure the light strips are adjacent to the ceiling when installing. Per the box, they should last a lot longer than the fluorescent.
                      by
                      Response from Product ExpertSep 2, 2025
                      Thank you for your feedback and for choosing Feit Electric products for your lighting needs.
                      • Verified Purchase
                      4 ft LED tube light. Nice light, great to convert from a fluorescent tube to an LED replacement.
                      by
                      Response from Product ExpertJan 31, 2025
                      Thank you for your feedback and for choosing Feit Electric products for your lighting needs.
                      • Verified Purchase
                      Very low light output compared to other LED lights
                      I needed to change the bulbs in a 4 foot light and I figured I would go with LED bulbs rather than replacing the entire fixture. But the output of these bulbs is pretty low. See how bad it is compared to some other LED shop lights in my photo. Would not recommend.
                      by
                      Response from Product ExpertJan 13, 2025
                      Thank you for your feedback, we are sorry to hear about the issue with your Feit Electric product, at your convenience feel free to send us an email for assistance, you can reach us at info@feit.com or visit our website for ballast compatibility:

                      https://www.feit.com/pages/ballast-compatibility
                        1 found this review helpful
                        Only issue is about 5 lights were broken in box. The bottom of the boxes need more padding.But the lights are excellent and work well in a commercial area needing good light and lpve thst they are LED.
                        by
                        Response from Product ExpertDec 30, 2024
                        Thank you for your feedback and for choosing Feit Electric products for your lighting needs.
                        • Verified Purchase
                        Bought 2 packages of 2 bulbs. One bulb did not work out of the box. Took the one package back for replacement. Home Depot was fantastic in the exchange. Hopefully they last a long time. They are nice and bright, and quiet.
                        by
                        Response from Product ExpertSep 13, 2024
                        Thank you for your feedback, we are sorry to hear about the issue with your Feit Electric product, at your convenience feel free to submit a warranty replacement. Here is the link to the warranty replacement request form:
                        https://help.feit.com/hc/en-us/requests/new?ticket_form_id=4417474650263
                        • Verified Purchase
                        After years of using mercury-based fluorescent tube lights with short-life spans I'm excited to give these new LED style tubes a try. Insulation was an easy plug and play. The light dispersement is bright and clear. Based on the performance of these 4 foot replacement lights I'm looking forward to replacing all my mercury base tube lights to this type of LED replacement light.
                        by
                        Response from Feit Product ExpertSep 25, 2023
                        Thank you for your feedback and for choosing Feit Electric products for your lighting needs.
                          This customer chose to rate the product and not provide text.
                          by
                          • Verified Purchase
                          This customer chose to rate the product and not provide text.
                          by
                          Easy install and directions.
                          by
                          Showing 1-10 of 1,030 reviews