Type PWIIS multi-blade air dampers

PWIIS dampers are used for airflow control or closing in rectangular ventilation ducts. They can be installed in air handling units or in a wall. The design of the damper ensures leakage class 2 or 4 in accordance with EN-1751. Special sealing inserts installed at the blade ends ensure high integrity. The respective blades are driven by the system of levers and tie rods in a backward arrangement.