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The SOLER PALAU 411008 is a gravity backdraft damper designed for use with roof exhauster systems in horizontal-mount exhaust applications. Built with a galvanized steel frame that is 2 inches deep and aluminum louver blades, this damper prevents reverse airflow when the exhaust fan is not running. Outer dimensions measure 8 inches x 8 inches. Spring-assisted operation allows the blades to open quickly when airflow is present, and a felt seal along the leading edge of each louver provides quiet closing. Licensed HVAC technicians and commercial ventilation contractors install this type of component as part of rooftop exhaust assemblies.
The 411008 is rated for horizontal-mount exhaust installations and is compatible with the size 7 CWD Exhauster. It is suited for commercial and light industrial ventilation systems where backdraft protection is required at the point of roof discharge. An optional motor kit, part number 411611, is available for motorized operation. This damper is not approved for grease exhaust applications and must not be installed in explosive or flammable atmospheres, including areas where flammable airflows are present.
Designed for use with the size 7 CWD Roof Exhauster. Compatible with optional motor kit 411611. Not suitable for grease exhaust applications or explosive and flammable airflow environments.
Installation should be performed by a qualified HVAC technician or commercial ventilation contractor familiar with rooftop exhaust systems. Power down the exhaust fan and any associated control circuits before handling or mounting the damper. The unit is designed for horizontal-mount orientation only — do not install in a vertical or non-standard position. Verify local mechanical codes and manufacturer guidelines before completing the installation.
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