The AdirOffice Vertical File Rolling Stand with 12 Brackets provides hanging blueprint storage that's convenient and easy to get to. The 12 pivot brackets swing out wide so it's a cinch to see and access your blueprints, plan drawings, maps, or other large documents. Just clamp your files into a hanging paper clamp (sold separately) and snap it onto one of the brackets. The brackets accommodate any size clamp, so you can fit documents in a variety of sizes onto this mobile blueprint stand at the same time. This mobile blueprint rack is adjustable to fit even your largest files. Made of solid steel, with a 240 lbs weight capacity (20 lbs per bracket), this hanging file rack can hold a lot of documents. It's easy to move your documents from room to room on this mobile plan rack, which has four 3" swivel wheels. The front two lock to hold it stable when you get it to its destination. Will accommodate all hanging clamps between 18", 24", 30, 36 and 42. (Clamps sold separately.)