Damper Hardware? Duro Dyne features a complete line of Air Regulation Hardware for nearly every configuration and also offers low cost alternative. Our assembly kits make installation as easy as 1-2-3. Duro Dyne also now offers an extensive line of stainless steel hardware for all your Air Regulation needs.
Warning: this product contains a chemical known to the State of California to cause cancer. P65Warnings.ca.gov