The DASL shutoff damper with EPDM gaskets at both flange
connections is designed for cladding with up to 50 mm thick insulation.
The DASL shutoff damper is a good choice when the ductwork closure
does not have to be fully airtight. The damper closure position can
be read on the 0° to 90° dial of the control handle. The damper closure
opening ratio can be fixed with a screw.
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