Vertiflex Smartworx File Cart, One-Shelf, 28 1/4w x 13 3/4d x 27 3/8h, Matte GrayFor letter size hanging file folders. Sliding file rails adjust to hold legal size file folders. Bottom storage shelf removes easily to add Vertiflex Smartworx Companion File (sold separately). Durable steel and wire construction. Four twin-wheel casters, two locking. Color: Matte Gray; Caster/Glide/Wheel: Four Twin-Wheel Casters (2 Locking); Material(s): Steel; Wire; Overall Width: 28 1/4".