SATCO Lighting S21823 4W B11 LED, Frosted, Candelabra Base, 2700K, 350 Lumens, 120V, 2-Pack

The S21823 puts out 350 lumens on 4 watts. That is in the range of a 40 watt incandescent candle lamp, so it is a like-for-like swap in a chandelier or sconce that was previously running 40W candelabra bulbs, at roughly a tenth of the draw.

No. The S21823 is a 120 volt lamp, so it belongs on standard line-voltage residential and light-commercial circuits only. For 277V branch circuits common in larger commercial buildings you need a lamp rated for that voltage, or the bulb will fail.

2700K is warm white, the same yellow-toned light an incandescent bulb produces. Combined with the frosted glass, which diffuses the LED filament glare, it suits hospitality lobbies, dining rooms and residential chandeliers where a crisp white would look clinical. If you are matching 3000K or 4000K lamps elsewhere in the building, this one will read noticeably warmer.

It ships as a 2-pack under part number S21823, so one order unit gets you two bulbs. Worth knowing if you are relamping a chandelier with six or eight sockets and need to work out how many packs to order to do the whole fixture at once.

B11 is the torpedo or candle shape, a slim tapered bulb about 1-3/8 inches across at its widest. It is what goes in chandeliers, candelabra sconces and decorative pendants where the bulb is visible and meant to look like a flame. An A-shape is the fat household bulb and will not sit right in a candle fixture; a G-shape globe is round and used in vanity bars. The frosted finish on this one hides the LED chips, which is usually what you want when the lamp is exposed.

Match on two things and it will blend: color temperature and brightness. This one is 2700K at 350 lumens. Property managers standardizing across a building usually land on 2700K for lobbies and units, so if that is already your standard these drop in without a visible color mismatch. Put a 3000K or 5000K lamp in the socket next to it in the same chandelier and the difference will be obvious.