NICOR’s REL Series 4-inch Selectable CCT Square Canless LED Downlight offers a clean and attractive aesthetic with a low-profile. The edge-lit technology allows for a very thin recessed design measuring less than an inch in depth. Easily change between 5 color temperature options (2700K, 3000K, 3500K, 4000K, 5000K) with the CCT selector switch on the driver. The high-performance REL Fixture features an impressive 93 CRI rating (R9 >50) to produce an incredible light output quality. Installation no longer requires a recessed housing, but rather a simple 4.25” diameter drywall cut-out using the provided template. The ultra-thin fixture depth and off-board driver (included) allows for a more flexible installation and increased product lifespan through superior heat management. The adjustable, spring-loaded retention tabs provide a secure fit, eliminating the need for a junction box or recessed housing. The REL comes ready to install right out of the box, no other parts or components are required. Protected by NICOR's 5-year limited warranty.