The Nadair 4" LED Ultra Slim Recessed Lights can be installed in the insulated and non-insulated ceilings. Our Nadair ceiling recessed lights are designed to be installed everywhere: Ultra-slim to fits in tight spaces ( only requires 1" of clearance space); made for indoors and outdoors, and safe to install in dry or damp locations. Compatible with a wide range of dimmers. 9 Watts LED, 750 Lumens, CRI 80, 120V, 3000K (Warm White) to give your home a warm and inviting ambiance. The Large Junction Box with the Quick Connect System makes the installation easier and faster. A white finish with a included BLACK trim to give a trendy look to your living space.