Southwark Metal 91_8X14 Sheet Metal Duct Box 8x14 Floor

Product Description

The SOUTHWARK METAL 91_8X14 is a sheet metal duct box designed for floor register applications in residential and light commercial HVAC duct systems. Built from hot dip galvanized steel, this duct box measures 8 inches by 14 inches with an 11-inch depth. It provides a clean, rigid transition between the subfloor opening and the floor register, directing conditioned air from the supply duct into the occupied space. HVAC technicians and sheet metal installers specify this type of box where a framed floor opening requires a formed metal liner to contain airflow and support the register grille. Compliance with ACCA and SMACNA standards ensures the unit meets accepted industry fabrication and installation practices.

This duct box is suited for new construction and replacement installations in forced-air heating and cooling systems where floor-mounted supply registers are specified. It fits into framed floor cavities and connects to the supply duct trunk or branch below. The 11-inch depth accommodates typical joist bay depths encountered in residential floor assemblies. HVAC contractors and sheet metal mechanics handling floor supply layouts will find this box appropriate for standard rough-in conditions where an 8 by 14 inch register opening is required.

Key Features

• Hot dip galvanized steel construction provides corrosion resistance in subfloor environments
• 8 inches by 14 inches face opening matches standard floor register grille sizes
• 11-inch depth accommodates typical residential floor joist bay clearances
• Fabricated to ACCA and SMACNA standards for duct construction
• Floor register type for supply air distribution at floor level

Compatibility

Designed as an OEM-style replacement and new-construction component for forced-air HVAC systems requiring a floor register duct box with an 8 inch by 14 inch opening.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Shut down the air handler and isolate the supply duct before fitting or replacing a duct box in an existing system. Secure the box to the framed floor opening per SMACNA duct construction guidelines, ensuring airtight seams at all duct connections to prevent conditioned air loss into the subfloor cavity. Follow local mechanical codes for fastener type and sealant requirements.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Face Size A: 8 inches x 14 inches
• Face Size B: 8 inches x 14 inches
• Depth: 11 inches
• Type: Floor Register
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 91_8X14