SATCO Lighting S28488 16.5W, A19 LED, 90CRI, 4000K, GU24 Base, 220 degree Beam Angle, 120V, 1600 Lumens, CEC

The S28488 is CEC listed, meaning it appears on the California Energy Commission's appliance database, which is what a California job requires for lamps installed under Title 24. That plus the GU24 base is the combination specifiers write when a fixture has to accept only high-efficacy lamps.

At 1600 lumens the S28488 puts out the light a 100 watt incandescent A19 gave you, drawing 16.5 watts to do it. Same A19 bulb shape, so it fits the same fixtures and shades a standard household A19 went into, provided the socket is GU24.

4000K is neutral white, cleaner and less yellow than the 2700K most residential tenants expect in living spaces. It reads well in corridors, laundry rooms, stairwells, parking structures, back-of-house and kitchens where you want a crisp working light. If you are relamping tenant living rooms and bedrooms to match existing warm lamps, 4000K will look noticeably bluer beside them, so keep the color temperature consistent per space rather than mixing.

90 CRI, which is above the 80 CRI most commodity LED lamps deliver and is the threshold usually specified where color accuracy matters: retail display, exam and patient rooms, hospitality, and paint or finish selection areas. Skin tones and merchandise colors hold up rather than going flat.

The 220 degree beam angle on this 16.5W A19 throws light out well past the sides of the bulb and back toward the base, so it fills a globe, drum, or wrap diffuser without a dark ring around the top. That is the spread you want in ceiling and wall fixtures where the lamp points up or sideways. For a downlight where you want the light aimed, a reflector lamp is the better choice.

120 volt only. This A19 GU24 lamp is a line-voltage 120V bulb for standard residential and light commercial branch circuits. Do not put it on a 277V circuit in a commercial building; you need a lamp rated for that voltage.

Satco S28488. That is the 16.5 watt A19 LED with a GU24 base, 4000K, 90 CRI, 1600 lumens, 120V, in a white finish. Satco's 4-digit S-number is the ordering designation, and the finish comes only in white on this one.