Southwark Metal 122SC-5 Ductboard Snaplock Collar 5 in

Product Description

The SOUTHWARK METAL 122SC-5 is a ductboard snaplock collar designed for connecting round duct to ductboard (fiberglass duct board) systems. The collar features a snaplock design that allows for quick, secure attachment without the need for additional fasteners. It is sized at 5 inches in diameter and is compatible with ductboard insulation thicknesses from 1.5 inches to 2 inches. HVAC technicians and sheet metal installers use this collar when transitioning between rigid round duct and ductboard plenums or distribution systems in residential and light commercial applications.

This snaplock collar is used in forced-air HVAC installations where ductboard is the primary duct material. It is typically installed at trunk-to-branch transitions, supply plenum connections, or other locations where a round collar must be inserted into and secured to a ductboard surface. The 1.5-inch to 2-inch insulation thickness range makes it suitable for standard residential ductboard used in attic, crawlspace, and mechanical room applications.

Key Features

• 5-inch diameter collar for standard round duct connections to ductboard systems
• Snaplock design enables fast, tool-free engagement for secure fitment
• Compatible with ductboard insulation thicknesses from 1.5 inches to 2 inches
• Designed for use in residential and light commercial forced-air HVAC systems
• SOUTHWARK METAL construction for consistent dimensional accuracy

Compatibility

Designed as an OEM-style replacement and new-installation fitting for ductboard-based forced-air HVAC distribution systems using round collars at 5-inch diameter openings with 1.5-inch to 2-inch ductboard thickness.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal installers. Power down the air handling unit and ensure the system is depressurized before working on duct connections. The snaplock collar should be inserted into a clean, properly scored and cut ductboard opening sized to match the collar diameter. Foil tape and mastic sealant applied at the collar-to-ductboard joint are standard practice per SMACNA guidelines to maintain air seal integrity.

Technical Specifications

• Collar Diameter: 5 inches
• Compatible Ductboard Thickness: 1.5 inches to 2 inches
• Connection Type: Snaplock

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 122SC-5