Sanzo 3W Round LED Panel Light Recessed Ceiling Lighting Cool White 6000K Ultrathin Downlight With Driver Lighting Lamp Fixture AC 85-265V Only 0.43 inch thin,outer diameter:3.35 inch,inner diameter:2.61 inch,cut out a 2.95 inch diameter hole Easy to install, connect driver wire with the power wire Ultra thin design, Making panel light very compact, Not dimmable Casting Aluminum Alloy Heat Sink Material, better heat dissipation Energy efficient, energy saving, environment friendly without IR and UV radiation