The Preferred Pack PP706 is a semi-automatic carton edge sealer with easy to use manual side adjustments to fix the machine to the dimensions of the box being edge-sealed. Top and bottom drive belt design. The PP-706 runs at top production speeds sealing 600 cartons per hour. It will automatically adjust and handle various box sizes in just seconds. The operator simply folds the side flaps of the corrugated carton and feeds it into the machine, it will automatically adjust to meet the carton dimensions. The box size must be at least 10 inches in length and a maximum of 24" in length to be properly sealed. The height and width must be larger than 10 inches and less than 24 inches.