Global vertical file letter size 4 drawer, black these heavy-duty steel filing cabinets keep important documents neatly integrated while using minimal space drawers open and close easily with triple-tied full extension cradle suspension. Four vertical steel channels give extra stability. 8 nylon rollers per drawer for 25″ model and 10 nylon rollers per drawer for 26 1/2″. High drawer sides eliminate the need for any hang rails. Durable baked-on enamel over phosphatizing primer rustproofing treatment. Constructed with welded corners for strength, rigidity and durability. Meets ansi/bifma 50