Runway Mountings: Type - Center Support Kit; Application - Supports Ladder Rack from Ceiling; Runway Size - 6 in. Width; Material - Steel; Finish - Plated; Installation - J-Bolt; Contents - Heavy-Duty Ladder Rack Cross Member, (2) Mounting Brackets, (2) 12-24 Screws, 5/8-in. Threaded Rod, Protected Sleeve and (4) 5/8-in. Nuts