Southwark Metal SP58_14X10 Spiral Duct Reducer 14x10 24GA

Product Description

The SOUTHWARK METAL SP58_14X10 is a spiral round sheet metal duct reducer used to transition airflow between two different round duct diameters in forced-air HVAC systems. Fabricated from hot-dipped galvanized steel at 24 gauge, this tapped reducer steps down from a 14-inch diameter inlet to a 10-inch diameter outlet. The spiral construction provides structural rigidity along the duct wall, and the tapped ends allow for secure, tool-assisted connection to adjoining duct sections. HVAC installers and sheet metal mechanics use reducers like this when balancing airflow across trunk and branch transitions in residential and light commercial duct systems.

This reducer is suited for installation in forced-air heating and cooling duct systems where a round spiral duct run changes size between the main trunk line and a branch takeoff. The 14-inch-to-10-inch reduction is common in residential systems where larger supply trunks feed smaller branch runs. Fabricated to ACCA and SMACNA standards, it is appropriate for new construction ductwork and retrofit or replacement applications requiring a code-compliant, galvanized round duct fitting.

Key Features

• Transitions from 14-inch diameter to 10-inch diameter in a single spiral round fitting
• 24-gauge hot-dipped galvanized steel construction resists corrosion in conditioned and unconditioned spaces
• Spiral seam design adds hoop strength and dimensional stability
• Tapped ends accept sheet metal screws for positive mechanical connection
• Fabricated to ACCA and SMACNA applicable standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for round spiral duct systems requiring a concentric reduction from 14-inch to 10-inch diameter round duct.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air-handling unit and isolate the duct section before fitting installation. Secure tapped ends with sheet metal screws and seal all joints with UL 181-listed mastic or foil tape as required by local code. Verify duct sizing against the ACCA Manual D load calculation before finalizing the transition size.

Technical Specifications

• Larger End Diameter: 14 inches
• Smaller End Diameter: 10 inches
• Material: Hot-Dipped Galvanized Steel
• Material Thickness: 24 Gauge
• Type: Tapped, Spiral, Round
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: SP58_14X10