A machine designed to close your square or rectangular section ventilation ducts after production. It performs the closing process with the most commonly used nulock seam in ventilation systems.

• It does not require adjustment when switching between the sheet thicknesses listed in the technical details. The machine operates quietly, works quickly, and is easy to use.
• It has high economic efficiency.
• Among similar machines, the seam shape is tighter and air permeability is lower.