Independent reference · not a sales listing
Westinghouse 0391500
Westinghouse R40 375 Watt Medium Base Incandescent Lamp
Westinghouse lists this R40 E26 incandescent at 375 watts and 2,300 lumens. Its stated light color is 2400 K warm white. No incandescent-equivalent claim is stored for this model.
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 E26 exactly. The R40 code describes the bulb envelope, not the socket. Open the E26 base guide. Check the R40 shape profile.
- 02
Electrical rating
The source lists 120 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 2,300 lumens. The 375 W figure is input power, not brightness.
- 04
Physical clearance
The official maximum overall length is 6.5 inches. Check shade, cover, and neck clearance.
- 05
Heat, controls, and location
Enclosed-fixture use is not stated; dimming is not stated; a wet/damp rating is not stated.
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
- Westinghouse
- SKU / model
- 0391500
- Technology
- INCANDESCENT
- Shape
- R40
- Base
- E26
- Voltage
- 120 V
- Input power
- 375 W
- Incandescent equivalent
- Not stated
- Light output
- 2,300 lumens
- Color temperature
- 2400 K
- CRI
- Not stated
- Dimmable
- Not stated
- Rated life
- 5,000 hours
- Beam angle
- Not stated
- Location rating
- Not stated
- Enclosed fixture
- Not stated
- Pack quantity
- 1
For comparison
Records with the same base and similar output
Same E26 base and within 35% of 2,300 lumens. These are comparison leads, not confirmed substitutes.
250R40/1/HDRP
R40 · E26 · 250 W
2,400 lm 2400 KFeit Electric250R40/1
R40 · E26 · 250 W
2,200 lm 2700 KPhilips571497
A21 · E26 · 29 W
2,610 lm 2700/2200 KFeit Electric250R40/1/RP
BR40 · E26 · 250 W
2,200 lm 2700 KFeit ElectricOM50/150/5CCTCA
A19 · E26 · 23 W
2,200 lm 2700/3000/3500/4000/5000 KFeit ElectricPAR38DM/2200/5K/LED
PAR38 · E26 · 21 W
2,200 lm 5000 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.
E26 · Medium screw
E26 is a medium Edison screw base with a nominal 26 mm thread diameter. In the United States, “standard” or “medium” base commonly means E26; bulb shape and voltage are separate specifications.
Open reference →Color guide2700K vs 3000K vs 5000K
Understand how the listed color temperature changes the look of a room.
Read guide →Code guideWhat bulb letters and numbers mean
Separate shape codes, base codes, dimensions, and electrical ratings on the label.
Read guide →Manufacturer indexMore Westinghouse model records
Compare verified models from the same official catalog snapshot by SKU, base, shape, power, and output.
Browse brand →Quick answers
Questions about 0391500
What socket does Westinghouse 0391500 use?
Westinghouse lists this model with a E26 base. Look for the same complete base code on the socket or old lamp. The R40 shape is a separate specification.
Is Westinghouse 0391500 dimmable?
The source snapshot does not state a dimming rating. Treat dimmer compatibility as unconfirmed.
Can Westinghouse 0391500 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.
BulbMatch stores factual fields for independent label and compatibility research. It is not affiliated with the manufacturer and does not sell this product.