The 2 Post Conversion Kit allows 4 post equipment to be center mounted onto 2 Post Racks. The conversion kit can be easily installed to 2 Post racks that have 3 inch uprights and is the preferred solution by most OEM manufacturers. Brackets can be coupled together to create even more space to fit your needs. Lone Star Racks sells Conversion Kits ranging from 2U to 4U with a weight capacity of 50 lbs per rack space. All assembly hardware comes included.