Additional Details ------------------------------ Product description: Nora Lighting & # 39; s 4" Cobalt LED luminaires are cULus available for use in existing 4" IC or Non-IC housings manufactured by Nora and others. Nora & # 39; s 4" Cobalt LEDs integrate the latest from the COB family of CREE LED arrays, giving spectacularly bright light output and low power consumption. Features: Round Square Rim Style Includes (1) 16.6W Integrated LED Light Memory aluminum construction spun NRA-211 Medium Base Threaded Socket included with each Cobalt Series for retrofitting into existing Medium Base downlight housings Dimmable capable cULus rated for wet location Covered by Nora Lighting's 5-year limited warranty suitable for both For commercial and residential applications Dimensions: Height: 6" Width: 9" Depth: 9" Trim Size: 4" Opening: 4" Electrical Specifications: Bulb Included: Yes Number of Bulbs: 1 Bulb Base: Integrated LED Bulb Type: LED Watts Per Bulb: 16W Power: 16W Voltage: 120V Color Temperature: 3000K Color Rendering Index (CRI): 90 Lumens: 1000 Hours Average: 50,000 Energy Star: Yes