The freezing is provided by all aluminum variable fin plate fin coil to assure even frost built through out the inside of coil surface, for maximum production time intervals. The coils are over sized to handle maximum frost built up and efficient freezing capacity. The coil has 1" O.D. tubing with .0651, wall thickness 3003 alloy, The fins thick 1145H19 alloy. (NOTE Galvanized steel coil can be also provided as option).