Rolling Stand with 12 Pivot Hangers for Blueprints The mobile stand is perfect for your blueprint files that require mobility, accessibility and ease of use. Heavy gauge steel telescoping channel construction adjusts in height and depth. Includes 12 chrome plated pivot hangers that swing wide to allow easy access to drawings and other large format documents. Mobile plan rack features four 3" ball bearing swivel casters with a locking feature for the rear casters. For use with clamps 18" to 42" in length (shown with optional clamps) and sheet sizes to 60" long.