SATCO Lighting S21355 8W T9 LED, Clear, Medium Base, 90 CRI, 3000K, 120V

Yes. The S21355 uses a medium base, the standard Edison screw socket found in most residential and commercial fixtures, so it drops into an existing medium-base lampholder with no adapter. It runs on 120 volt line power.

Only if those are also 3000K. The S21355 is a 3000K lamp, and color temperature is the one spec that shows up instantly when it does not match. Mixing 3000K with 2700K or 4000K lamps in the same room or the same run of fixtures reads as an obvious mismatch even to someone who does not know what a Kelvin number is. Check what is in the sockets now and relamp a whole space at once rather than one bulb at a time.

The S21355 puts out 3000K light, a soft warm white that reads slightly warmer than neutral, and it carries a 90 CRI rating, so colors and skin tones render accurately, which matters in hospitality, retail display, and residential common areas. It draws 8 watts at 120 volts.

For anywhere people judge color, yes. The 90 CRI rating on the S21355 means the light renders colors close to a reference source; standard-grade LED lamps commonly sit around 80 CRI, where reds and skin tones flatten out. In guest rooms, restaurants, retail fitting areas, and healthcare spaces, 90 CRI is usually what gets written into the spec. In a back-of-house corridor or a storage room it buys you nothing you would notice.

Clear means the filament LEDs are visible through the glass rather than diffused behind a frosted coating. In an exposed fixture, a bare-socket pendant, a vanity bar, or a chandelier where the bulb is part of the look, that gives a sharper sparkle and visible detail. If the bulb sits behind a shade or a lens where nobody sees it, the clear finish makes no visual difference. Clear is the only finish the 8W T9 S21355 is offered in.

The T9 LED pulls 8 watts on a 120 volt circuit. For a property manager relamping a lobby or corridor with dozens of decorative sockets, that is the number that drives the load calculation and the relamp interval, and it is a fraction of what a comparable decorative incandescent tube draws.