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The DUC-PAC DP10020.2018.36 is a 26-gauge sheet metal plenum designed for forced-air HVAC duct systems. Each unit measures 20 inches x 20.125 inches x 36 inches, providing a consistent, ready-to-install form factor that saves layout and fabrication time in the field. This listing covers a pack of 100 plenums, making it suited to contractors running multiple installs or stocking a supply house. The 26-gauge construction offers a balance of structural rigidity and workability for standard residential and light-commercial trunk and plenum applications. Licensed HVAC installers and sheet metal mechanics are the primary installers of this product.
These prefabricated plenums are intended for use in forced-air heating and cooling duct systems where consistent sizing and gauge are required across multiple units. The 20 x 20.125 x 36-inch dimensions fit standard trunk line configurations common in residential new construction and retrofit projects. The pack-of-100 quantity is well matched to production homebuilders, mechanical contractors, and HVAC supply distributors managing high-volume duct runs. No field fabrication of the plenum body is required, reducing labor time on the job site.
Designed as an OEM-style prefabricated plenum for use in residential and light-commercial forced-air duct systems requiring 20-inch x 20-inch nominal plenum sections.
Installation should be performed by a licensed HVAC technician or sheet metal mechanic in accordance with applicable local mechanical codes and SMACNA duct construction standards. Power down the air handling unit and verify the system is de-energized before connecting the plenum to any supply or return air equipment. Seal all seams and joints with code-compliant mastic or UL-listed foil tape to meet air leakage requirements. Do not modify the gauge or dimensions in ways that compromise structural integrity or airflow design intent.
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