Independent reference · not a sales listing
Westinghouse 0621400
Westinghouse MR11 20 Watt GU4 Base Halogen Low Voltage Xenon Lamp
This is a 20-watt halogen with a MR11 envelope and GU4 base. It produces 230 lumens. The listed light color is 2900 K warm white. No incandescent-equivalent claim is stored in the source snapshot.
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 GU4 exactly. The MR11 code describes the bulb envelope, not the socket. Compare base profiles.
- 02
Electrical rating
The source lists 12 V. Confirm that against the fixture and local supply.
- 03
Brightness, not “watts”
Target about 230 lumens. The 20 W figure is input power, not brightness.
- 04
Physical clearance
The official maximum overall length is 1.42 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 are transcribed and normalized from the official source. A blank claim stays “not stated”; it is never filled by assumption.
- Manufacturer
- Westinghouse
- SKU / model
- 0621400
- Technology
- HALOGEN
- Shape
- MR11
- Base
- GU4
- Voltage
- 12 V
- Input power
- 20 W
- Incandescent equivalent
- Not stated
- Light output
- 230 lumens
- Color temperature
- 2900 K
- CRI
- Not stated
- Dimmable
- Not stated
- Rated life
- 10,000 hours
- Beam angle
- 30°
- Location rating
- Not stated
- Enclosed fixture
- Not stated
- Pack quantity
- 1
Useful next check
Nearby specification matches
Same GU4 base and within 35% of 230 lumens. These are comparison leads, not confirmed substitutes.
BPLVMR11/830CA
MR11 · GU4 · 3 W
245 lm 3000 KFeit ElectricBPLVMR11/830CA/HDRP
MR11 · GU4 · 3 W
245 lm 3000 KFeit ElectricBPFTD/930CA
MR11 · GU4 · 2.8 W
210 lm 3000 KFeit ElectricBPMR11/LED/CAN
MR11 · GU4 · 4 W
250 lm 3000 KWestinghouse0474800
MR11 · GU4 · 20 W
180 lm 2800 KWestinghouse0475000
MR11 · GU4 · 20 W
180 lm 2950 KRead 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.
GU4 · compare base profiles
Use the visual base atlas to compare screw diameter, pin spacing, and locking style.
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 0621400
What socket does Westinghouse 0621400 use?
The official record identifies a GU4 base. The replacement socket must use the same base code; a similar-looking bulb shape does not establish socket compatibility.
Is Westinghouse 0621400 dimmable?
The source snapshot does not state a dimming rating. Treat dimmer compatibility as unconfirmed.
Can Westinghouse 0621400 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.