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The SOUTHWARK METAL 122SC-14 is a ductboard snaplock collar designed for connecting flexible or rigid ductboard systems to round duct runs. The collar measures 14 inches in diameter and features a snaplock engagement profile with a flange depth ranging from 1.5 inches to 2 inches, allowing it to seat securely against ductboard panels without additional fasteners. This type of fitting is a standard component in low-pressure HVAC air distribution systems and is installed by sheet metal workers and HVAC technicians during new construction or retrofit duct fabrication.
The 122SC-14 is suited for residential and light commercial HVAC applications where ductboard trunk lines or branch takeoffs require a clean, sealed collar connection. It is typically used at supply or return register boots, plenum connections, and branch junction points in ductboard duct systems. The snaplock design speeds up installation and provides a consistent mechanical connection at the ductboard face.
Designed as an OEM-style replacement and new-installation fitting for 14-inch round ductboard collar applications in residential and light commercial HVAC duct systems.
Installation is performed by licensed HVAC technicians or sheet metal workers. Shut down the air handling unit and de-energize the system before cutting into any duct section or installing collars. The collar is inserted into a field-cut hole in the ductboard panel; use a sharp ductboard knife and a circle cutter sized to the collar diameter for a clean fit. Seal all collar-to-ductboard joints with UL 181B-rated foil tape or mastic per applicable mechanical codes.
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