KINGSO 3W Round LED Panel Recessed Ceiling Light Natural White 4000-4500K Ultrathin Downlight With Driver Lighting Lamp Fixture AC 85-265V Only 11mm thin,outer diameter:3.15 inch,inner diameter:2.61 inch,cut out a 2.61 inch diameter hole Ultra thin design,Making panel light very compact,Not Dimmable Casting Aluminum Alloy Heat Sink Material,better heat dissipation Easy to install,connect driver wire with the power wire Energy efficient,energy saving,environment friendly without IR and UV radiation