This ductboard trunkline reducer is built to provide a smooth, efficient transition between different duct sizes while maintaining proper airflow and system performance. Fabricated in-shop for accuracy and consistency, each reducer is designed to minimize turbulence and static pressure loss—helping your system run more efficiently and install faster in the field. Key Features Precision-built ductboard reducer transition Smooth airflow design to reduce turbulence High-quality foil-faced ductboard construction Clean, square edges for easy installation Custom sizes available to match your system requirements Applications Trunkline size transitions Supply and return duct systems Residential and light commercial HVAC Retrofit or new construction projects The listed price covers ductboard trunkline reducers up to 20” x 30”. Larger sizes, custom configurations, or high-volume orders will require a custom quote.
