SATCO Lighting S11640 8.7W, LED Downlight Retrofit, 4in, 90 CRI, 3000K, 120V, Pack of 6

Bathroom ceiling, yes. The S11640 is rated for damp locations and listed for indoor use, so an enclosed bath or laundry is fine. A covered exterior porch is not covered by a damp indoor rating; for open soffits or anywhere exposed to weather you want a wet-rated retrofit instead.

It is dimmable on 120V, 60Hz line voltage. Note it runs 8.7 watts, so on an older incandescent dimmer with a high minimum load you may get flicker or a limited dim range, especially if it's the only fixture on the circuit. Pairing several of the six in the pack on one dimmer, or using an LED-rated dimmer, sorts that out.

No. The S11640 is not Title 24 compliant, so it won't satisfy California high-efficacy requirements on permitted new construction or major remodels in that state. For maintenance replacement and retrofit in existing buildings outside that scope it's fine. If you're on a Title 24 job, spec a JA8-listed retrofit instead.

600 lumens at 8.7 watts. That lands in the range of a 50 watt halogen BR/PAR lamp, which is what most 4 inch cans were originally lamped with, so you get comparable output for roughly a sixth of the draw. At 3000K it reads as warm white, a touch cooler and cleaner than a standard incandescent.

Locked in. This one is fixed at 3000K warm white, with no CCT selector switch and no wattage selector either. That's actually the point for a property manager standardizing a building: every unit out of the box matches every other, no chance of a tech flipping a switch and leaving one can at 4000K in a hallway of 3000K.

90 CRI renders color much closer to daylight, which matters where people judge finishes, fabric, food, or skin tone: hotel guest rooms, retail, healthcare exam areas, model units, and residential kitchens and baths. In a back-of-house corridor or storage room the difference isn't worth specifying. The S11640 is the 90 CRI, 3000K version at 600 lumens.

Whole unit. The light source is an integrated LED in a plastic and aluminum body, so there is no lamp to change. Rated life is 35,000 hours, which at 12 hours a day of corridor or common-area runtime is roughly eight years before you're back on the ladder. Buy in the 6 pack and keep a spare on the shelf for the odd early failure.

White trim, round, in a flat utility profile, sold six to a pack under part number S11640. One pack covers a typical hallway or a small kitchen ceiling in a single order, which is why it's a common standardizing item for multi-family and MRO stock.