Southwark Metal 31PF-24GA_4X10 Duct Plaster Frame 4x10 24GA

Product Description

The SOUTHWARK METAL 31PF-24GA_4X10 is a sheet metal duct plaster frame boot rail designed for return air duct terminations in residential and light commercial HVAC systems. Fabricated from hot dip galvanized steel at 24 gauge, this plaster frame provides a rigid, corrosion-resistant border where a floor or wall boot meets a plaster, drywall, or finish surface. It is installed by HVAC sheet metal mechanics and duct installers to create a clean, stable transition between the ductwork and the finished surface opening. The 4 inch by 10 inch frame size suits standard register boot applications and complies with ACCA and SMACNA fabrication standards.

This plaster frame is used in return air duct systems where a grille or register is flush-mounted into a finished wall, floor, or ceiling surface. It is suited for new construction and renovation projects where duct boots are set before plaster or drywall is applied. The frame holds the boot opening square and flush during finishing work, preventing the surrounding material from collapsing into the duct opening. It is a standard component in forced-air residential HVAC duct systems built to SMACNA sheet metal specifications.

Key Features

• Hot dip galvanized steel construction resists corrosion in humid or condensation-prone duct environments
• 24 gauge material thickness meets SMACNA and ACCA fabrication standards for return air applications
• 4 inch by 10 inch frame size fits standard return air register boot openings
• Rigid frame holds boot opening square during plaster or drywall finishing
• Designed for return air duct terminations in residential and light commercial systems

Compatibility

Designed as an OEM-style sheet metal component for return air duct boot installations conforming to ACCA and SMACNA standards for residential and light commercial forced-air systems.

Installation Notes

Installation is performed by licensed HVAC sheet metal mechanics or duct installers. The frame is set around the boot opening before finish surfaces are applied, so sequencing with other trades is important. Shut down the air handling system before any duct modification work. Follow SMACNA Sheet Metal and Air Conditioning Contractors guidelines for fastening and sealing duct components.

Technical Specifications

• Frame Size: 4 inches x 10 inches
• Material: Hot Dip Galvanized Steel
• Material Thickness: 24 Gauge
• Type: Return Air
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 31PF-24GA_4X10