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The IO HVAC CONTROLS HD-05 is a 5-inch round heavy duty damper designed to regulate airflow in residential and light commercial HVAC duct systems. Built for durability in demanding applications, this damper provides reliable zone control and airflow balancing within forced-air distribution systems. Its round design fits standard 5-inch round ductwork, making it a practical choice for new installations and retrofit projects alike. Licensed HVAC technicians and sheet metal installers typically specify this component when setting up or servicing zoning systems that require dependable mechanical damper performance.
This damper is suited for use in residential forced-air systems and light commercial ducted HVAC applications where round duct runs require controlled airflow management. It fits into 5-inch round duct configurations and is commonly installed in branch lines, zone control setups, and air balancing applications. Its heavy duty construction makes it appropriate for systems with higher static pressure demands or where a longer service life is required under frequent cycling conditions.
Designed as an OEM-style replacement and new-installation damper for standard 5-inch round duct systems in residential and light commercial forced-air HVAC applications.
Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes and local jurisdictional requirements. De-energize the air handling system and ensure the air handler or furnace is powered down before beginning duct work. Secure the damper to the duct using appropriate fasteners and seal all joints with listed duct sealant or metal tape per SMACNA guidelines. Verify damper blade orientation and actuator linkage alignment before restoring system operation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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