Mayline Mobilizers File with Lid and Drawer Mobilizer, The Mobilizers Letter Size (File with lid and drawer) has a heavy-gauge steel construction with 4 non-locking casters It can accommodate full-height binders and it fits under most desks It features a drawer lock, and a drawer pull is included as well All models are UPS-able, ready-to-assemble, and are available on both the Kwik-Ship and Fast Freight delivery programs with no quantity limitations