Resideo MARD-12 Damper 323080-701 Durable Construction: Heavy-gauge materials designed

Durable Construction: Heavy-gauge materials designed to resist corrosion from combustion byproducts

for a complete restoration

The A188 cross-references specifically with Goodman 7021-10958

ensuring the wattage-to-displacement ratio is optimized for the motor housing

Always check for dirty filters or blocked vents before replacing the switch

Resideo MARD-12 Damper 323080-701 Durable Construction: Heavy-gauge materials designedThe Resideo MARD 12 Damper is a professional grade 12 inch round modulating damper designed for high performance HVAC zoning and bypass control. Built with heavy duty 22 gauge galvanized steel, this three wire motorized damper is engineered for longevity in both residential and light commercial mechanical systems. It features a 24Vac floating actuator that provides precise control, with a 90 second motor timing for full stroke transition from open to