Upgrade your recessed lighting with this 4-inch Square Retrofit Recessed Downlight, it features innovative technology that allows you to choose the color temperature at the time of installation. These dimmable downlights put out a bright 750 lumens and allow you to choose the color temperature at the time of installation. Select 2700K, 3000K, 3500K, 4000K or even 5000K depending on your preference using a switch located on the back of the fixture. Made of robust die-cast aluminum, it fits most 4" ceiling cans. For easy installation, it comes with a medium base adapter and mounting hardware. It can be dimmed (10%-100%) when installed with an LED compatible dimmer. High color rendering at 90 CRI. Dimmer List: Leviton Cat. No. 6681. With a long 50,000-hour life span, these will provide years of reliable and maintenance-free service that only uses 11 watts of electricity. Estimated annual energy costs of $1.32 (Based on 3 Hrs/Day at $0.11/kWh). Installing these Energy Star Certified fixtures may qualify you for state or local energy rebates. These are ETL Listed for safety and quality. Unlike fluorescent tubes they contain no harmful chemicals. Ideal for Living Rooms, Entryways, Bedrooms, Kitchens, Hallways & Bathrooms. Dimension 5" W x 3.24" H x 5" D.