Strong Racks 4'x8' 600 LB DIY Overhead Storage Unit Size: 4 x 8 Decorations & Low Profile Overhead Rack.Weight Capacity: 600 LBS Metal Thickness: 10ga. Mounting Track. 18ga. down tubes Storage: 23 Mounts into 4 joists, Tubular Downrod construction, safety rail,grids bolted into place Uses: Great solution for low profile space above garage door.