Safco® PlanHold/Print-Lock™ 18" Hanging Clamps (Six/Box.) Everyone on the jobsite or in the office can see plot plans when they are displayed vertically on a rack instead of laid out on a table. Capable of holding up to 100 sheets or 20 pounds of plans, this clamp works with all stands and racks. Mounting clips are designed to resist jamming and easy to open and close. Made out of durable extruded aluminum construction with polished chrome plated cast alloy wing knobs. Mark different pages for easy reference with green label holders, included. Clamp features a 10 year limited warranty. Wing knobs have a lifetime guarantee. Ordering supplies for a big project? Buy multiple clamps and receive them packed six per case. The next time you are presenting for the monthly construction meeting, use a Safco Alvin Planhold Hanging Clamps-18In to provide easy access to the plans for everyone attending.