With a double-wall construction, lateral file construction offers exceptional base construction for maximum rigidity. Baked enamel finish over rust-inhibiting, phosphate pretreatment adds durability. Telescoping, ball bearing suspension provides an extraordinarily smooth caisson operation. Drawers accommodate letter-size or legal-size folders side by side with included adjustable hangrails. The drawers flush on the top and sides and feature recessed aluminum drawer pulls with a plastic label holder, drawer extension restriction. Mechanical Interlock only allows one drawer to open at a time. Folders also offers four adjustable leveling guides for lateral stabilization; Hon ONE KEY interchangeable, Core Locks removable; Steel construction and reinforced cover. Locking mechanism secures to both sides of drawers.