Reinforced backdraft damper

The DAOSL-B / DAOS-B ventilation dampers is a new version
of DAOS (L) backdraft dampers. In addition, it is reinforced
with a reinforcing rods, making it possible to manufacture
large diameters up to Ø630mm, while maintaining the
rigidity of the construction and correct operation of the
blades. The DAOSL-B damper with seals is used in installations
that meet airtightness class D according to DIN EN 12237.
The DAOS-B-FLS version with flanges is suitable for mounting
on axial fans.