SATCO Lighting S21285 4W B11 LED, Clear, Medium Base, 90 CRI, 3000K, 120V

Yes, the S21285 is an enclosed rated lamp, so it can go in a sealed or gasketed fixture without voiding the rating. That is the detail that trips up most LED retrofits in lanterns, jelly jars, and closed sconces, where trapped heat kills lamps that are not rated for it. It is also wet location rated and listed for indoor or outdoor use, so exterior porch lanterns and covered entries are fair game.

The S21285 is dimmable on 120V line voltage. It is an LED filament lamp, so as with any low-wattage LED, a 4 watt load can sit below the minimum load some older magnetic or high-wattage incandescent dimmers need to run smoothly. If you are relamping a whole building on legacy dimmers, put a couple in on one circuit first and watch for flicker at the bottom of the dial before you commit the order.

Any orientation. The S21285 is rated for universal burning position, so base-up, base-down, or horizontal all work. Combined with the 300 degree beam spread, it throws light nearly all the way around the lamp rather than in one direction, which is what you want in an exposed chandelier arm or an open-bottom lantern where the bulb is seen from every side.

Close to it. 3000K is a warm white, and 90 CRI renders color much nearer to an incandescent than the 80 CRI lamps that dominate the low end, so skin tones, wood, and fabric hold up. The clear glass with a visible LED filament means the lamp reads as a decorative element in exposed fixtures rather than a frosted blob. One caution for hospitality work: at 3000K it will not match 2700K lamps on adjacent fixtures, and the difference is visible side by side.

Yes, the S21285 is Title 24 compliant, which is the box a contractor has to tick on California residential work. It is also FCC compliant. It is not DLC listed, so if a utility rebate program you are filing under requires DLC qualification, this lamp will not carry that claim.

Rated 15,000 average hours. On a common corridor or exterior fixture running roughly 12 hours a day, that is about three and a half years of service, which is the argument for putting it in stairwell and high-ceiling locations where the lift or the ladder is the real cost rather than the lamp. At 4 watts replacing 40 watts, the connected load on those circuits drops by a factor of ten.

Neither. The S21285 is a single-output lamp: fixed at 3000K with no CCT selection switch, and not a three-way bulb. Put it in a three-way socket and you get one light level across all switch positions. For dimming you use a dimmer, which this lamp does support.

Glass envelope on a nickel plated aluminum base. The nickel plating is the part that matters outdoors, since it resists the corrosion that seizes a bare base into a damp socket and turns a two minute relamp into a broken bulb. Paired with the wet location rating, that is what makes this one suitable for exterior lanterns rather than covered-only use.