Independent reference · not a sales listing
Feit Electric T48/840/B/LED/10
4 ft. 18W Cool White (4000K) G13 Base (T8/T12 Replacement) Ballast Bypass (Type B) LED Linear Tube (10-Pack)
Feit Electric lists this T8 G13 led - smd at 18 watts and 1,800 lumens. Its stated light color is 4000 K neutral white. The manufacturer also gives a 40-watt incandescent replacement class.
View the official record ↗Source citation, not a buying link.Before replacing it
Read these five fields before ordering
Use the old bulb and fixture label together. A shared base or wattage figure answers only part of the fit question.
- 01
Socket and shape
Match G13 exactly. The T8 code describes the bulb envelope, not the socket. Open the G13 base guide. Check the T8 shape profile.
- 02
Electrical rating
The source lists 120/277 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 1,800 lumens. The 18 W figure is input power, not brightness.
- 04
Physical clearance
Confirm that the T8 envelope fits the shade or cover; this snapshot does not provide complete dimensions.
- 05
Heat, controls, and location
Enclosed-fixture use is not stated; it is marked non-dimmable; the location rating is Damp.
Normalized specifications
What the label says
These values come from the cited manufacturer record. If that record omits a field, the table says “not stated” instead of supplying a likely value. See how the label fields differ.
- Manufacturer
- Feit Electric
- SKU / model
- T48/840/B/LED/10
- Technology
- LED - SMD
- Shape
- T8
- Base
- G13
- Voltage
- 120/277 V
- Input power
- 18 W
- Incandescent equivalent
- 40 W
- Light output
- 1,800 lumens
- Color temperature
- 4000 K
- CRI
- 80
- Dimmable
- No
- Rated life
- 50,000 hours
- Beam angle
- Not stated
- Location rating
- Damp
- Enclosed fixture
- Not stated
- Pack quantity
- 10
For comparison
Records with the same base and similar output
Same G13 base and within 35% of 1,800 lumens. These are comparison leads, not confirmed substitutes.
T4815/4CCT/AB/LED/10
T8 · G13 · 18 W
1,800 lm 3000/4000/5000/6500 KFeit ElectricT4815/4CCT/AB/LED/2
T8 · G13 · 18 W
1,800 lm 3000/4000/5000/6500 KFeit ElectricT4815/4CCT/B/LED/10
T8 · G13 · 18 W
1,800 lm 3000/4000/5000/6500 KFeit ElectricT4815/4CCT/B/LED/2
T8 · G13 · 18 W
1,800 lm 3000/4000/5000/6500 KFeit ElectricT4815/4CCTABLED/2CAN
T8 · G13 · 18 W
1,800 lm 3000/4000/5000/6500 KFeit ElectricT48/840/LEDG2
T8 · G13 · 14 W
1,750 lm 4100 KRelated references
Put this model in context
The record describes one lamp. Use these guides for the socket, fixture, controls, and comparable records from the same manufacturer.
G13 · Medium bi-pin tube base
G13 is the two-pin base used at the ends of many T8 and T12 linear lamps. A matching base does not establish ballast or wiring compatibility.
Open reference →Control guideDimmable vs non-dimmable LED
Read the bulb's claim separately from dimmer compatibility and fixture conditions.
Read guide →Color guide2700K vs 3000K vs 5000K
Understand how the listed color temperature changes the look of a room.
Read guide →Manufacturer indexMore Feit Electric model records
Compare verified models from the same official catalog snapshot by SKU, base, shape, power, and output.
Browse brand →Quick answers
Questions about T48/840/B/LED/10
What socket does Feit Electric T48/840/B/LED/10 use?
Feit Electric lists this model with a G13 base. Look for the same complete base code on the socket or old lamp. The T8 shape is a separate specification.
Is Feit Electric T48/840/B/LED/10 dimmable?
No. The official record marks this model as non-dimmable, so it should not be used on a dimming circuit.
Can Feit Electric T48/840/B/LED/10 be used in an enclosed fixture?
The source snapshot does not state an enclosed-fixture rating. Do not infer one from shape or wattage; confirm on the bulb or manufacturer page.
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