Southwark Metal 91_12X12 Sheet Metal Duct Box 12x12

Product Description

The SOUTHWARK METAL 91_12X12 is a hot dip galvanized steel sheet metal duct box designed for floor register applications in residential and light commercial HVAC duct systems. Measuring 12 inches by 12 inches with an 11-inch depth, this duct box provides a sturdy, corrosion-resistant boot that connects supply ductwork to a floor register opening. Licensed HVAC technicians and sheet metal installers rely on this type of fitting to terminate supply runs cleanly at the floor plane, maintaining airflow integrity through the finished register face.

This duct box is suited for new construction and retrofit installations where a 12-inch by 12-inch floor register is specified. Its hot dip galvanized finish resists corrosion in crawlspace and under-floor environments where moisture exposure is common. The 11-inch depth accommodates standard joist cavity dimensions, making it a practical choice for installations in wood-frame residential floors. It is fabricated in compliance with ACCA and SMACNA standards, which are the industry benchmarks for sheet metal duct construction and installation practices.

Key Features

• Hot dip galvanized steel construction provides corrosion resistance for under-floor and crawlspace environments
• 12 inches by 12 inches opening matches standard floor register sizing
• 11-inch depth fits typical joist cavity installations
• Fabricated to ACCA and SMACNA applicable standards
• Floor register type boot design for supply air termination at the floor plane

Compatibility

Designed as an OEM-style replacement and new-installation fitting for residential and light commercial supply duct systems terminating at a 12-inch by 12-inch floor register opening.

Installation Notes

Installation of sheet metal duct boxes is performed by licensed HVAC technicians or sheet metal contractors in accordance with SMACNA ductwork installation guidelines. Power down the air handling system before cutting into existing ductwork or making connections. Seal all joints with UL 181-rated mastic or approved metal foil tape to maintain system pressure and efficiency. Follow local mechanical codes and ACCA Manual D requirements for duct sizing and fitting placement.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size A: 12 inches x 12 inches
• Size B: 12 inches x 12 inches
• Depth: 11 inches
• Type: Floor Register Duct Box
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 91_12X12