Independent reference · not a sales listing
SYLVANIA 40300
SYLVANIA LED Red Glass Filament A19 Light Bulb, 40W = 4.5W, Dimmable, E26 Medium Base - 1 PK
This is a 4.5-watt led with a A19 envelope and E26 base. It produces 800 lumens. The numeric color temperature is not stated in the source snapshot. 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 A19 code describes the bulb envelope, not the socket. Open the E26 base guide.
- 02
Electrical rating
Voltage is not stated in this snapshot. Read it from the lamp or official record before substituting.
- 03
Brightness, not “watts”
Target about 800 lumens. The 4.5 W figure is input power, not brightness.
- 04
Physical clearance
Confirm that the A19 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 dimmable; 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
- SYLVANIA
- SKU / model
- 40300
- Technology
- LED
- Shape
- A19
- Base
- E26
- Voltage
- Not stated
- Input power
- 4.5 W
- Incandescent equivalent
- 40 W
- Light output
- 800 lumens
- Color temperature
- Not stated
- CRI
- Not stated
- Dimmable
- Yes
- Rated life
- Not stated
- Beam angle
- Not stated
- Location rating
- Not stated
- Enclosed fixture
- Not stated
- Pack quantity
- 1
Useful next check
Nearby specification matches
Same E26 base and within 35% of 800 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 →Brightness guideA19 LED watts and lumens
Compare replacement classes by useful light output instead of wattage alone.
Read guide →Manufacturer indexMore SYLVANIA model records
Compare verified models from the same official catalog snapshot by SKU, base, shape, power, and output.
Browse brand →Quick answers
Questions about 40300
What socket does SYLVANIA 40300 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 SYLVANIA 40300 dimmable?
Yes. The official record marks this model as dimmable, but the installed dimmer must also support the lamp technology and load.
Can SYLVANIA 40300 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.