Engineered with a 3-1/8 inch insertion length

maintaining the same shaft diameter and outer dimensions for a precise fit

the 314100 allows for a consistent 3-1/2 inch stroke

preventing premature wear on the blower motor bearings and housing

using the correct OEM-spec components like the 118-1917 kit prevents premature fatigue on suction and discharge lines by absorbing operational harmonics

Aaon R29590 Damper Gear Engineered with a 3-1/8 inchThe Aaon R29590 Cast Metal Damper Blade Gear is a precision engineered OEM replacement part designed for high performance airflow regulation in commercial HVAC systems. Built from high strength cast metal, this economizer damper gear provides superior mechanical leverage compared to plastic alternatives, ensuring reliable operation of damper blades within air handling units (AHUs) and rooftop units (RTUs). With dimensions of 6. 15" W x 6. 25" D x 1.