Coidak CO818-2 18W 6500K 8.9-Inch Square Cool White LED Panel Light Ultra Thin Recessed Light with LED Driver Ultra thin: only 12mm thin, outer size: 225*225mm(L*W)/8.9*8.9inches, open hole: 205*205mm(L*W)/8.1*8.1inches. Super bright: 18W, 1350LM, 6500K cool white, no noise and no flickering , no IR and UV radiation . Long lifespan: aluminum alloy housing for better dissipation for longevity up to 50000 hours . High performance, low power consumption. Easy to install: cut out a 8.0-8.2 inch diameter hole, connect driver wire with the power wire, wrapped insulating tape around, and the springs hold it in place. NOTE: PANEL LIGHT AND LED DRIVER CONNECTOR HAS BEEN UPGRADED , AS OUR LEFT PICTURES SHOW ; PANEL LIGHT PERFORMANCE NO CHANGE , PLEASE DON'T WORRY ! What You Get: Coidak Square LED Panel Light Cool White 18W 8.9-Inch, LED driver, 2 years warranty and friendly customer service.