Southwark Metal 122SC-7 Ductboard Snaplock Collar 7 in

Product Description

The SOUTHWARK METAL 122SC-7 is a ductboard snaplock collar designed for use in residential and light commercial HVAC duct systems. This collar provides a secure, snap-fit connection point where a round duct branch connects to a ductboard plenum or trunk. It features a 7-inch diameter opening with a flange depth ranging from 1.5 inches to 2 inches, allowing it to seat firmly into ductboard panels of varying thickness. Licensed HVAC technicians and sheet metal installers use this fitting to maintain airtight connections throughout a supply or return air distribution system.

This snaplock collar is appropriate for new construction and replacement installations where ductboard is used as the primary duct material. It is suited for residential forced-air systems and light commercial applications where round branch takeoffs must be integrated cleanly into a flat ductboard surface. The snaplock design speeds installation by eliminating the need for additional fasteners at the collar-to-board interface.

Key Features

• 7-inch diameter collar for standard round duct branch connections
• Flange depth range of 1.5 inches to 2 inches accommodates varying ductboard panel thicknesses
• Snaplock design provides a secure, tool-free fit into ductboard
• Compatible with typical supply and return air ductboard plenum assemblies
• Designed for airtight branch takeoff connections in low-pressure air distribution systems

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial ductboard HVAC systems requiring a 7-inch round snaplock collar.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal installer in accordance with SMACNA ductboard installation guidelines and applicable local mechanical codes. Power down the air handling unit and verify the system is depressurized before cutting into any existing ductboard plenum. Use an appropriate hole saw or ductboard knife to cut the opening to the correct diameter before seating the collar. Seal all joints with UL 181B-rated tape or mastic as required by code.

Technical Specifications

• Collar Diameter: 7 inches
• Flange Depth: 1.5 inches to 2 inches
• Connection Type: Snaplock
• Application: Ductboard plenum branch takeoff

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 122SC-7