Material: SteelFinish: Epoxy-CoatedSupports Units Up To 160 Lbs.Use To Transfer the Weight Of The Air Conditioner From The Window Sash And Sill To The Support And Window Frame For SafetyMinimizes The Chance Of Damage To The Window, Window Parts Or Outside WallBubble Level Sets The Proper Angle For Condensate Runoff From UnitsInstallation Is Done Completely From Inside The House For SafetyIncludes All Necessary Mounting Hardware And Instructions