One Upper cabinet can be mounted by sliding into Chase’s ordered with an opening for a cabinet or, if two cabinets are preferred, one or both must be surface-mounted to the chase. Surface-mounted cabinets require an End Panel for both sides to finish Upper Cabinet’s exterior. Open Cupboard with white interior. Width: 12-in. (30.48cm) Height: 30-in. ( 76.20cm) Depth: 7.375-in. (18.73cm)