Adir Corp. 614 Mobile Vertical Plan Center for Blueprints - Sand Beige ADJUSTABLE LENGTH AND HEIGHT. While the width is fixed at 15 inches, this sand beige mobile rack is length adjustable from 27.5 to 47.25 inches and height adjustable from 32.5 to 57 inches to effectively store your files with ease. BUILT TO LAST. Made of solid steel with a powder-coated finish to provide long-lasting strength and use throughout the years, this mobile stand works equally well in harsh environments and soft settings. It boasts a 240-pound weight capacity and can hold up to 1200 documents at once! CONVENIENT DESIGN. Accommodating up to 12 clamps at the same time, just clamp your files into the paper clamps and drop them into the top bracket for quick access to your hanging blueprints. Please note: Only one size of hanging clamps can be placed into this mobile blueprint stand at a time. EASY TO TRANSPORT. Four, ball-bearing swivel casters on the bottom facilitate easy movement from one location to the next. The front two casters lock to keep the unit securely in place when you get to your destination. VARIETY OF CLAMP SIZES. This cart is available with or without clamps. The right hanging clamps are key to a filing systems effectiveness, which is why these strong aluminum clamps with solid steel, silver wing knobs are both visually pleasing and soundly durable. This unit is offered with your choice of 24-, 30-, 36- and 42-inch size clamps to accommodate your needs.