Value Collection 15231240 Galvanized Duct Stack 3-1/4 in Id

Product Description

The VALUE COLLECTION 15231240 is a galvanized steel duct stack fitting used in residential and light commercial HVAC air distribution systems. It connects supply air plenums to floor or wall registers, directing conditioned air from the main duct into living spaces. The fitting measures 3-1/4 inches inside diameter, 24 inches high, and 10 inches long, making it a standard-profile stack for typical floor-to-register runs. At 2.7 pounds, it is manageable for single-technician installation. The galvanized steel construction provides corrosion resistance suited to the warm, humid airflow environment inside supply duct systems.

This duct stack is intended for forced-air heating and cooling systems where supply air is routed vertically through a floor assembly before turning horizontal to a boot and register. It is commonly installed during new construction or duct replacement in residential single-family and light commercial applications. HVAC technicians and sheet metal installers use this fitting when stubbing up from a main trunk line to a floor register location. Standard-gauge galvanized construction meets typical duct fabrication requirements for low-pressure supply systems.

Key Features

• 3-1/4 inch inside diameter matches standard floor-register and boot sizing
• 24-inch height accommodates typical floor joist and subfloor depth configurations
• 10-inch overall length provides the horizontal run needed to connect trunk to stack
• Galvanized steel construction resists corrosion in conditioned-air environments
• Standard-gauge material compatible with common sheet metal fabrication and sealing methods
• Sold individually, allowing single-unit replacement or staged installation

Compatibility

Designed as an OEM-style replacement or new-installation fitting for low-pressure forced-air supply duct systems requiring a 3-1/4 inch inside diameter vertical stack configuration.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal installer. Shut down the air handling unit and close the supply-air isolation point before disturbing existing ductwork. Seal all joints with UL 181-rated mastic or foil tape in accordance with local mechanical code requirements. Do not use this fitting on return-air or exhaust applications without verifying pressure and flow ratings are appropriate for the application.