Salsbury Industries 19045-12ASK Cell Phone-4 Unit Surface Mounted-Master Keyed Locks with 5-Inch Diameter Compartments, Aluminum Unit Dimension: 24" W x 25.5" H x 6.25" D Total Usable Compartments: 12 Door Dimensions: (12) 6.5" W x 5.25" H Locking Type: Master Keyed Locks Mounting Type: Surface