These plans come in a PDF format for an enclosed cabinet to help keep dirt and other foreign material out of the machine mechanism . Cabinet upper ball hopper holds 3,000 plus balls. Largest opening possible on the cabinet ball hopper for faster reload of balls. A large lower compartment for storage and the door opens to a shelf. Key lock to open machine door once mounted to wall. Also, they are modular so with a longer wall mounting cleat you can mount as many as you have room for down a wall.