KINGSO 9W Square LED Panel Dimmable Recessed Ceiling Light Warm White 2700-3200K Ultrathin Downlight With Driver Lighting Lamp Fixture AC 85-265V Only 13mm thin,outer diameter:5.70 inch,inner diameter:4.92 inch,cut out a 4.92 inch diameter hole Ultra thin design,Making panel light very compact,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