Mounting to the wall frees the floor entirely, which matters in a bedroom where a bed sits close to the baseboard or a robot vacuum runs nightly. The 16.5 by 12 by 11.5 in body holds two drawers measuring 13.5 by 10 by 2.5 in inside, each on metal slides. Two mounting kits ship in the box for installation into solid brick cavity and gypsum walls are not suitable. Install height is chosen to suit the bed.