Counterweight included, where applicable, to meet ANSI / BIFMA requirements. Three-part, telescoping, steel ball bearing suspension for smooth drawer operation. Drawers include side-to-side hangrails for letter or legal size filing, a full-width radius-style pull and magnetic label holder. Mechanical interlock allows only one drawer to be open at a time to inhibit tipping. Four adjustable leveling glides help compensate for uneven flooring. HON 'One Key' interchangeable core removable locks.