HALO 4" Ultra Thin LED Downlight x 4 - $30 (Anderson)

Halo HLB4 Selectable Series Downlights are complete 4 in.
ultra-thin canless recessed lights designed for use in new construction, remodel and retrofit installation, without needing a housing or j-box.
Ultra-slim design goes where LED can lights can't.
Choose your color temperature directly on the fixture.
With the flick of a switch, you can choose between 3 color temperatures ranging from warm (3000K) to daylight (5000K) prior to installing into your ceiling.
This Halo recessed lighting fixture features an LED driver that offers 120-Volt dimming capability.
The HLB4 LED recessed lighting soft lens provides uniform illumination and wet location listing.
These are 15.
97 each from Home Depot.
If you are reading this, they are available.