Wittmann Model Drymax 180 Material Dryer and Wittmann Model Silmax 400 Hopper Juliet Schindler 1 year ago Wittman Dryer Wittmann Model Drymax 180 Material Dryer and Wittmann Model Silmax 400 Hopper Model number of Dryer- Drymax 180 Air flow- 127 cubic feet per minute Model number of the Hopper- Silmax 400 Capacity of hopper- 400 Condition- Very good