Independent reference · not a sales listing
Westinghouse 4518600
Westinghouse Lighting ST15 4.5-Watt (40-Watt Equivalent) Medium Base Clear Dimmable Filament LED Lam
This is a 4.5-watt led with a ST15 envelope and E26 base. It produces 470 lumens. The listed light color is 2700 K warm white. The maker positions it around a 40-watt incandescent replacement class.
View the official record ↗Source citation, not a buying link.Before replacing it
Five checks decide the fit
A shared base or wattage alone is not enough. Work down the list with the old bulb and fixture label in hand.
- 01
Socket
Match E26 exactly. The ST15 code describes the bulb envelope, not the socket. Open the E26 base guide.
- 02
Electrical rating
The source lists 120 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 470 lumens. The 4.5 W figure is input power, not brightness.
- 04
Physical clearance
The official maximum overall length is 4.65 inches. Check shade, cover, and neck clearance.
- 05
Heat, controls, and location
The source approves totally enclosed fixtures; it is marked dimmable; the location rating is Damp.
Normalized specifications
What the label says
These values are transcribed and normalized from the official source. A blank claim stays “not stated”; it is never filled by assumption.
- Manufacturer
- Westinghouse
- SKU / model
- 4518600
- Technology
- LED
- Shape
- ST15
- Base
- E26
- Voltage
- 120 V
- Input power
- 4.5 W
- Incandescent equivalent
- 40 W
- Light output
- 470 lumens
- Color temperature
- 2700 K
- CRI
- 80
- Dimmable
- Yes
- Rated life
- 15,000 hours
- Beam angle
- 320°
- Location rating
- Damp
- Enclosed fixture
- Approved
- Pack quantity
- 1
Useful next check
Nearby specification matches
Same E26 base and within 35% of 470 lumens. These are comparison leads, not confirmed substitutes.
Read the specification in context
Use the record, then check the system
The label describes this lamp. These guides help connect it to the socket, room, controls, and other models from the same manufacturer.
E26 · Medium screw
E26 is the standard medium screw base used by most household bulbs in the United States. Base and bulb shape are separate specifications.
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 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 4518600
What socket does Westinghouse 4518600 use?
The official record identifies a E26 base. The replacement socket must use the same base code; a similar-looking bulb shape does not establish socket compatibility.
Is Westinghouse 4518600 dimmable?
Yes. The official record marks this model as dimmable, but the installed dimmer must also support the lamp technology and load.
Can Westinghouse 4518600 be used in an enclosed fixture?
The official record marks it for totally enclosed fixtures. The fixture's wattage, voltage, and clearance limits still apply.
BulbMatch stores factual fields for independent label and compatibility research. It is not affiliated with the manufacturer and does not sell this product.