SATCO Lighting S21377 4W T6.5 ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.50
Satco Lighting SAT-S21377 4 Watt T6.5 LED - Frosted - Double Contact Bayonet Base - 4000K - 360 Lumens - 120 Volt

SATCO Lighting S21377 4W T6.5 LED, Frosted, Double Contact Bayonet Base, 4000K, 360 Lumens, 120V

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Model: S21377
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$5.50
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SATCO Lighting S21377 4W T6.5 LED, Frosted, Double Contact Bayonet Base, 4000K, 360 Lumens, 120V

4 Watt T6.5 LED - Frosted - Double Contact Bayonet Base - 4000K - 360 Lumens - 120 Volt

Manufacturer Resources

Spec Sheet

Product Specs

Product Group:
Indoor Lighting
Product Subgroup:
Light Bulbs
CRI:
90+
Dimmable:
Yes-Dimmable
Lumens:
360L
Product Weight:
0.05 lb
Product Material:
Glass

Satco Lighting S21377 – Frequently Asked Questions

1) What base does the Satco S21377 LED bulb use, and will it drop into a standard screw socket?
The S21377 uses a double contact bayonet base, so it will not thread into an Edison screw socket. It pushes in and twists to lock, which is the base found on exit signs, elevator fixtures, appliance and indicator applications. If your fixture has a screw socket, this is the wrong lamp.
2) Can I run the Satco S21377 T6.5 LED on 12V or 24V low voltage?
No. It is a 120 volt lamp and needs line voltage. On a 12V or 24V circuit it will not light. For low voltage fixtures you need a bulb rated for that supply.
3) How bright is the Satco S21377 and what color does it give off?
360 lumens at 4000K, which is a neutral white, not the yellow of incandescent and not the blue-white of 5000K daylight. Draws 4 watts. In a stairwell, corridor or cabinet fixture it reads as a clean white that matches typical commercial 4000K troffers.
4) What size is a T6.5 bulb and will it fit in a tight fixture?
T6.5 is a tubular lamp 6.5 eighths of an inch in diameter, about 13/16 inch across the tube. That is the same envelope diameter as the incandescent T6.5 lamps commonly used in bayonet-base fixtures, so it suits the narrow compartments those fixtures have.
5) How many watts do I save swapping an incandescent bayonet lamp for the Satco S21377?
The S21377 pulls 4 watts to put out 360 lumens. Bayonet-base incandescent lamps in that lumen range typically run in the 25 to 40 watt neighborhood, so the load drop per fixture is substantial when you are relamping a building full of them. Same double contact bayonet base, so no socket change is needed.
6) Is the Satco S21377 clear or frosted, and will you see the LED chips?
Frosted. The diffused glass spreads the output and hides the individual emitters, so it is the better pick where the lamp sits in view or behind a clear lens. If you want a sparkle or filament look, a clear lamp is the other choice.
7) Will the Satco S21377 LED work on a dimmer or with an existing transformer circuit?
Treat it as a straight 120V line voltage replacement. The S21377 is specified only as a 4W, 120V LED lamp with no dimming or transformer compatibility called out, so for a property manager standardizing fixtures the safe application is a plain switched 120V circuit.
8) What is the manufacturer part number for the Satco frosted 4W T6.5 bayonet LED?
Satco S21377. That number covers the 4W T6.5 frosted lamp with the double contact bayonet base, 4000K, 360 lumens, 120V. It is sold in the frost finish only, so the part number alone is enough to order the right lamp.
How fast can I get the Satco Lighting S21377 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Satco Lighting S21377 come with a warranty?
Absolutely. The Satco Lighting S21377 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Satco Lighting S21377?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Satco Lighting S21377 from ZenSupply?
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