The AMS HT has two active inlet and outlet air vent, with the bottom one as the inlet and the rear one as the outlet. The dampers in the Inlet (side wall) Unit and Outlet (bottom) Unit assemblies are identical, differing only in cable length. When drying the filament, AMS HT will discharge moisture from the inside through external circulation. When performing external circulation, the air inlet and outlet will be opened. Please ensure that they are not obstructed by other debris to achieve the best drying performance.