Resideo MARD-8 Damper 340155-7024 variable pitch sheave designed for

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

When should the external equalization be used

typical HVAC installation standards require a 30-amp breaker for a 5kW load

and outdoor elements

Always verify the rotation of your existing blower before installation

Resideo MARD-8 Damper 340155-7024 variable pitch sheave designed forThe 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