The Hart & Cooley 013221 butterfly damper delivers precise inline volumetric regulation for standard residential and commercial heating and cooling configurations. Built to accommodate an 8-inch round duct, this component features a dual-blade butterfly setup that adjusts to balance airflow downstream. The unique golden sand enamel finish provides excellent surface protection and an attractive aesthetic appearance.
For sheet metal installers, balancing contractors, and HVAC service pros, selecting a heavy-duty steel damper ensures consistent duct management over decades of thermal cycling. The smooth butterfly mechanism minimizes airflow restriction when fully open, while allowing tailored airflow dampening across specific ventilation branches or individual rooms. It serves as a dependable addition to air handling infrastructure.
Be sure to check that the 8-inch round connection size matches your project blueprint dimensions and mechanical duct parameters before purchasing. Cross-reference technical submittals and product drawings to ensure a suitable fit inside your specific damper box or register boot. Enlist a qualified mechanical contractor to install the unit for secure alignment and noise-free operation.
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