Resideo MARD-8 Damper 340155-7024 This HVAC expansion valve is

This HVAC expansion valve is a critical component for maintaining target subcooling and optimizing refrigerant flow across varying thermal loads in 39T series and other compatible Carrier/Bryant/Payne evaporators

variable pitch sheave designed for precise HVAC blower speed adjustment and fan drive optimization

Always verify the rotation of your existing blower before installation

and outdoor elements

Resideo MARD-8 Damper 340155-7024 This HVAC expansion valve isThe Resideo MARD 8 is a heavy duty 8 inch modulating automatic round damper designed for high performance bypass and zone control in commercial and residential HVAC systems. Built with a 22 gauge galvanized steel shell, this single blade damper features a male crimped and female uncrimped end for seamless integration with rigid or flexible ductwork. A primary application for this 3 wire motorized damper is managing bypass air in systems larger than