Southwark Metal 121sc5 Snap Collar 5 Inches

Product Description

The SOUTHWARK METAL 121sc5 is a 5-inch snap collar designed for use in sheet metal ductwork assemblies. Snap collars provide a quick, secure mechanical connection between round duct sections, fittings, and takeoffs without the need for additional fasteners. The 121sc5 is sized at 5 inches in diameter and is installed by HVAC technicians and sheet metal contractors during duct fabrication and installation. Its snap-fit design allows for fast field assembly, making it a practical choice for both new construction and service work.

This snap collar is suited for residential and light commercial HVAC duct systems where 5-inch round duct connections are required. Typical applications include branch takeoffs from main trunk lines, connections to round-to-rectangular transitions, and inline duct joiners. It is commonly used in forced-air heating and cooling systems where speed of assembly and a tight mechanical fit are priorities.

Key Features

• 5-inch diameter snap-fit collar for fast, tool-free duct connections
• Designed for round duct assemblies in forced-air HVAC systems
• Snap-lock design eliminates need for additional mechanical fasteners at the collar joint
• Compatible with standard 5-inch round duct and fittings
• Part of the 121SC series from SOUTHWARK METAL

Compatibility

Designed as an OEM-style replacement and standard component for 5-inch round duct systems in residential and light commercial forced-air HVAC installations.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal contractors. Power down the air handling system before working on duct connections. Snap collars should be seated fully and secured with sheet metal screws or foil tape at the joint per local mechanical code requirements. Follow applicable SMACNA standards and local mechanical codes for duct construction and sealing.

Technical Specifications

• Series: 121SC
• Collar Diameter: 5 inches

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 121sc5