Southwark Metal 31PF-16GA_6X14 Plaster Frame Boot Rail 6x14

Product Description

The SOUTHWARK METAL 31PF-16GA_6X14 is a sheet metal duct plaster frame boot rail designed for return air duct terminations in residential and light commercial HVAC installations. Fabricated from hot dip galvanized steel at 16 gauge, this frame provides a rigid, corrosion-resistant border that supports drywall, plaster, or tile finishes around a 6 inch x 14 inch duct opening. It is installed by sheet metal workers and HVAC technicians as part of a complete boot assembly, creating a clean, structurally sound transition between the duct system and the finished wall or ceiling surface.

This plaster frame is suited for return air applications where a flush, finished appearance is required at the grille opening. Typical installations include residential forced-air systems where boots are set into framing before drywall is applied. The 6 inch x 14 inch frame size accommodates standard return air grille openings of the same nominal dimension. It is commonly used in new construction and renovation work where SMACNA and ACCA duct fabrication standards apply.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in return air environments
• 16 gauge material thickness for rigid, stable framing around duct openings
• 6 inch x 14 inch frame size fits standard nominal return air grille openings
• Fabricated to ACCA and SMACNA applicable standards
• Return air type — designed for low-pressure return side duct terminations

Compatibility

Designed as an OEM-style sheet metal component for return air boot assemblies in residential and light commercial forced-air duct systems requiring a 6 inch x 14 inch plaster frame termination.

Installation Notes

Installation is typically performed by licensed sheet metal workers or HVAC technicians during rough-in, before drywall or plaster finish is applied. The frame should be secured to framing members per SMACNA duct construction guidelines and local mechanical code requirements. Ensure the duct system is depressurized and the air handler is shut off before making connections to the boot assembly. Do not compress or deform the frame during fastening, as this can affect grille fitment and air seal integrity.

Technical Specifications

• Frame Size: 6 inches x 14 inches
• Material: Hot Dip Galvanized Steel
• Material Thickness: 16 Gauge
• Type: Return Air
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 31PF-16GA_6X14