SATCO Lighting S21379 5.5W T14 LED, Clear, Medium Base, 2700K, 500 Lumens, 120V

It replaces a 40W incandescent. The LED puts out 500 lumens at 5.5 watts, so you get comparable output for roughly an eighth of the draw. The 2700K color is the warm, yellowish tone people expect from the incandescent it is standing in for, and at 90 CRI the color rendering is closer to incandescent than a typical LED lamp.

Yes, it carries a wet location rating and is listed for both indoor and outdoor use, so exposed porch lanterns, string light sockets and open-bottom exterior fixtures are fair game. Burning position is universal, so it can point up, down, or sideways without affecting life.

The bulb is dimmable. Be aware it draws only 0.046A at 120V, which is well under the minimum load many older incandescent-style dimmers need to run smoothly. On a legacy dimmer a single bulb on the circuit may flicker or drop out at the low end; an LED-rated dimmer or several bulbs on the same circuit solves it.

That is exactly what it is built for. The T14 is a tubular glass lamp with clear housing and an LED filament, so you see the lit filament strands rather than a frosted plastic dome, which is the look wanted in exposed pendants, vanity bars, sconces and cage fixtures. If the bulb sits behind a shade or diffuser and nobody sees it, a frosted A-shape lamp is the more economical pick since the decorative filament is wasted.

Beam spread is 300 degrees, close to omnidirectional. Filament construction throws light out the sides and back of the lamp rather than forward only, so it fills a shade or a bare socket evenly the way an incandescent did. Standard downward-facing LED lamps typically cover far less.

Rated life is 15,000 hours. At roughly 5 hours a day that is about 8 years of service, which is the argument for putting it in high-ceiling pendants, stairwell fixtures and exterior lanterns where the relamp itself costs more in labor than the bulb does.

No. The S21379 is not a 3-way lamp. In a 3-way socket it will run at a single output level on whichever contact it makes, so if you need stepped brightness from the turn knob you need a lamp built for 3-way operation. It is dimmable, so a dimmer-controlled fixture is the other route to variable light.

No, the color is fixed at 2700K warm white and the lamp is not CCT selectable, so there is no switch to set 3000K or 4000K. For a property standardizing across corridors, units and exteriors, this one covers the warm incandescent-look openings only; anything specced cooler needs a separate lamp. On the plus side every unit is the same 2700K, so there is no color mismatch between fixtures.

No. This lamp is not DLC approved, so it will not qualify under rebate programs that require a DLC listing. It is FCC compliant for electromagnetic interference, and the California web text marks it lawful for sale in that state.

It matters where people and merchandise are being looked at. At 90 CRI, skin tones, wood finishes and fabric colors read accurately, which is why restaurants, hotel lobbies and showrooms spec 90-plus. Paired with the 2700K warm tone and 500 lumen output, it is a decorative-light-level lamp, not a task or work light.