High Density Storage and Filing Files + Storage by Mayline Allow 5.25″ (letter depth) clearance from wall for rotating carriage. There is a Standard Lock on all of the cabinets. It is ideal for storing color-coded filing. The shelves adjust on 1 1/2″H increments. Adder units attach to either the right or left side of the starter unit. The ARC top is unfinished. Work surfaces are available. Quantities are limited to 5 of any model per order.