The DAOSL-IN dampers feature a split flap closure and are
designed as non-return dampers which allows a single air flow direction only.
Both closure flaps are made of light-weight aluminium sheet and hinged on a
steel bar with springs which keep the flaps closed when there is no air flow.
This damper is often installed upstream of an air intake or an air exhaust unit
to prevent the air backflow. The DAOSL-IN dampers are designed for inline duct installation.
This saves time and space and requires fewer installation accessories.
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