HEAVY DUTY THREE-PIECE BALL-BEARING SUSPENSION. CORE-REMOVABLE LOCK ALLOWS OPTIONAL ONE-KEY CONVENIENCE FOR MULTIPLE FILES. FULL WIDTH DESIGNER DRAWER PULLS. DUAL LOCK BARS SECURE BOTH ENDS OF DRAWERS. FOUR ADJUSTABLE LEVELING GUIDES. REINFORCED DOUBLE BASE CONSTRUCTION. INTERLOCK SYSTEM PROHIBITS THE EXTENSION OF MORE THAN ONE DRAWER AT A TIME. HANG RAILS INCLUDED FOR SIDE-TO-SIDE FILING. ACCEPTS LETTER/LEGAL/A-4 SIZE HANGING FILES. MAGNETIC LABEL HOLDER FOR EACH DRAWER. BAKED ENAMEL FINISH. MEETS OR EXCEEDS ANSI/BIFMA STANDARDS.