Southwark Metal WS10_3-1/4X10-4X10 Duct Stack Head

Product Description

The SOUTHWARK METAL WS10_3-1/4X10-4X10 is a short throat sheet metal duct stack head used to transition from a floor joist cavity or wall stack to a floor register boot or grille opening. Constructed from hot dip galvanized steel, it provides corrosion resistance in residential and light commercial forced-air duct systems. This fitting measures 3-1/4 x 10 inches on the stack inlet side and 4 x 10 inches on the register outlet face. It is sized and built to ACCA and SMACNA fabrication standards, making it a recognized component for code-compliant residential HVAC duct installations. HVAC sheet metal technicians and duct installers are the primary trades who specify and install this fitting.

This stack head is used in residential forced-air heating and cooling systems where a narrow wall cavity or floor joist channel carries supply air from the plenum to a floor or baseboard register. The short throat design is selected when the transition from the stack to the register face requires a compact vertical rise. It suits standard 3-1/4 x 10 inch wall or floor stack configurations terminating at a 4 x 10 inch register opening. It is commonly installed during new construction framing or during duct replacement and renovation work in existing homes.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in supply-air applications
• Short throat design for installations requiring a compact transition height
• 3-1/4 x 10 inch stack inlet to 4 x 10 inch register face transition
• Fabricated to ACCA and SMACNA applicable standards
• Fits standard residential floor and wall stack duct configurations

Compatibility

Designed as an OEM-style sheet metal fitting for standard residential forced-air duct systems using 3-1/4 x 10 inch wall or floor stack configurations with a 4 x 10 inch register boot or grille face.

Installation Notes

Sheet metal duct fittings of this type are installed by licensed HVAC technicians or qualified duct fabricators following SMACNA and ACCA duct construction guidelines. Power down the air handling unit and close the system dampers before making connections at the plenum or stack. Secure all joints with sheet metal screws and seal with UL 181-listed mastic or metal foil tape per local mechanical code requirements. Do not use standard duct tape as a primary sealant on supply-air ductwork.

Technical Specifications

• Stack Inlet Dimensions: 3-1/4 x 10 inches
• Register Face Dimensions: 4 x 10 inches
• Type: Short Throat
• Material: Hot Dip Galvanized Steel
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: WS10_3-1/4X10-4X10