8" Adjustable Butterfly Damper, Round, Brown

Product Overview

The Hart & Cooley 013221 Adjustable Butterfly Damper is a round airflow control component from the Series 12 line, engineered for precise air volume regulation within commercial and residential HVAC duct systems. Designed for use in 8-inch round ducts, this damper features a manually adjustable butterfly blade mechanism for balancing air distribution and system efficiency. The steel body with a Golden Sand finish ensures corrosion resistance and mechanical durability suitable for professional duct system installations.

Technical Specifications

• Model: 013221
• Manufacturer: Hart & Cooley
• Series: 12
• Product Type: Adjustable Butterfly Damper
• Duct Size Compatibility: 8-inch round duct
• Damper Diameter: 8 inches
• Outside Diameter: 9-1/2 inches
• Height: 4-11/16 inches
• Material: Formed steel construction
• Finish: Golden Sand (brown tone)
• Blade Type: Adjustable butterfly-style blade with pivot assembly
• Operation: Manual adjustment for airflow balancing
• Airflow Function: Volume control and system balancing for supply or return ducts
• Mounting Configuration: Inline installation within round duct systems
• Application: Air distribution systems in commercial, industrial, and residential HVAC installations
• Compliance: Manufactured to industry standards for air distribution and balancing components

Professional Notes

Install the damper in an accessible section of ductwork to allow for post-installation balancing. Securely fasten using standard sheet metal screws or approved duct hardware. Verify that the butterfly blade moves freely and aligns properly with the duct airflow path. The damper is suitable for use in both supply and return air applications. Do not alter the damper assembly, as modifications may impact system performance or compliance with mechanical code standards.

Summary

The Hart & Cooley 013221 Series 12 Adjustable Butterfly Damper is an 8-inch round steel damper with a Golden Sand finish, measuring 9-1/2 inches in outside diameter and 4-11/16 inches in height. Designed for manual airflow control and system balancing, it provides durable, professional-grade performance for commercial and residential HVAC duct applications.