SATCO Lighting S21365 8W ST19 LED, Clear, Medium Base, 90 CRI, 4000K, 120V

Yes, it's an enclosed rated lamp, so it can go in a jelly jar, a flush-mount dome, a lantern with a closed globe, or any sealed housing where heat builds up. Most LED filament bulbs aren't rated for that and fail early. It's also rated for wet locations and listed for both indoor and outdoor use, which covers a porch fixture or an exposed exterior sconce.

No, and this is the most common mis-order on this lamp. The S21365 is 4000K, a neutral white, not the amber 2200K to 2700K glow people associate with vintage filament bulbs. Put it next to a warm filament lamp in the same run of fixtures and the difference is obvious. Where 4000K works well is a lobby, corridor, laundry room, or exterior entry where you want the exposed filament look but need crisp, clean-reading light. For a warm match, order a 2200K or 2700K ST19 filament lamp instead.

The lamp is dimmable. It's a 120V line-voltage LED, so it needs a dimmer rated for LED loads. Older incandescent (leading-edge) dimmers were built for a much larger resistive load than a single 8 watt lamp, and at that low a wattage you tend to get flicker, buzz, or a dead bottom end to the dimming range. Worth noting: it is not a three-way lamp, so it won't step through levels in a three-way socket.

Any orientation. Burning position is universal, so base-up in a pendant, base-down in a ceiling fixture, or horizontal in a sconce all work with no derating. The exposed-filament construction also throws light at a 300 degree beam spread, close to omnidirectional, which is what you want in a fixture where the bulb is visible from the side and below.

For anywhere people and finishes are on display, yes. At 90 CRI the S21365 renders skin tones, wood, stone, and fabric far closer to how they look under daylight than the 80 CRI lamps that fill most commercial relamp jobs. That matters in a hotel lobby, a leasing office, a retail display, or a restaurant. In a stairwell or a back-of-house corridor you're paying for color quality nobody sees. Pair the 90 CRI with the 4000K neutral white and you get clean, accurate light rather than the yellow cast of a typical decorative filament lamp.

Rated at 15,000 hours. On a lobby or corridor fixture burning 12 hours a day that's roughly 3.4 years; on a dusk-to-dawn exterior fixture at about 4,380 hours a year, roughly 3.4 years as well. That's the number that decides whether a decorative filament lamp in a high-ceiling or exterior location is worth the labor to reach, and it's the reason to spec the enclosed and wet rated version rather than a standard filament lamp that will cook in a sealed globe.

No. The S21365 is not DLC approved, so it won't count toward a utility program that requires a DLC listed product. It is FCC compliant, and it's flagged lawful for sale in California, which covers the state's lamp regulations. If the rebate is driving the spec, you need a DLC listed lamp; if you're specifying it for the decorative filament look, the DLC status is usually irrelevant since DLC coverage for decorative lamps is thin anyway.

Glass envelope on a nickel plated aluminum base. The nickel plating is the part that matters outdoors, it resists the corrosion that seizes a plain brass or steel base into a damp socket and turns a two-minute relamp into a broken bulb. Combined with the wet location rating, that makes it serviceable in an exterior entry or coach light rather than just a covered porch.

Fixed at 4000K. There's no CCT selectable switch on this lamp, so every one you order is neutral white out of the box. For a property manager standardizing across a building that's an advantage, there's no switch for a tech to leave on the wrong setting and no mismatched fixtures six months later. If you need one lamp that can be field-set to 2700K, 3000K, or 4000K, this isn't it.

S21365 is the Satco part number, in clear glass. The full spec set behind that number: 8W, 800 lumens, ST19 shape, medium base, 90 CRI, 4000K, 120V, dimmable, enclosed and wet rated. Clear is the only glass option, so there's no amber or frosted variant to specify under the same number.