Southwark Metal mc-84l-20 Duct Collar 2 Inch Ring 20 Inch

Product Description

The SOUTHWARK METAL mc-84l-20 is a duct collar with a 2-inch ring, sized at 20 inches, designed for use in HVAC duct systems where a secure, sealed transition point is needed at register or diffuser openings. Built from fiberglass, this collar provides a lightweight and durable connection point suited for installation in ceilings, floors, or sidewalls. It is part of the 84ST2 series and is typically installed by HVAC technicians during new construction or retrofit duct work where a clean boot-to-opening interface is required.

This collar is used in residential and light commercial HVAC applications where a 20-inch duct opening must be fitted with a rigid collar and ring assembly. The 2-inch ring provides a defined lip for securing registers, grilles, or diffusers at the termination point of a duct run. Its fiberglass construction makes it a suitable choice in installations where moisture resistance or weight reduction is a priority compared to sheet metal alternatives.

Key Features

• Fiberglass construction for lightweight durability and moisture resistance
• 20-inch sizing fits standard large-opening duct terminations
• 2-inch ring provides a defined lip for grille or register mounting
• Part of the 84ST2 series for consistent fitment within the product family

Compatibility

Designed as an OEM-style replacement or new-installation collar for residential and light commercial HVAC duct systems requiring a 20-inch collar with a 2-inch ring termination.

Installation Notes

Installation of this duct collar is typically performed by a licensed HVAC technician. Ensure the duct system is fully de-energized and the air handler or furnace is shut down before beginning work. The collar should be secured according to local mechanical codes and the duct manufacturer's guidelines. Do not force or over-compress the collar into an undersized opening, as this may compromise the seal.

Technical Specifications

• Material: Fiberglass
• Series: 84ST2
• Size: 20 inches
• Ring Size: 2 inches

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: mc-84l-20