Commercial-grade vertical file features four drawers, full-cradle suspension, up to 10 nylon rollers to ensure smooth quiet operation, and a "One Key" interchangeable, core-removable lock. High drawer sides accommodate hanging folders. Adjustable-wire follower blocks keep the files upright. Drawers feature bright aluminum pulls, label holders and a thumb latch. Black vertical file is made of heavy-gauge steel with baked enamel finish over rust-inhibiting phosphate pre-treatment.