This model typically meets ASME B40

Using this genuine ICP 1175971 wheel restores the unit's factory-rated airflow and ensures consistent ignition cycles during heavy-duty winter operation

While the actuator is easily replaced

How do I check for groove wear

The kit contains the 06NA660028 filter element and the specific O-ring required for the housing cover

Siemens Building Technology GQD221.1U Actuator 320819-301 This model typically meets ASMEThe Siemens GQD221. 1U Actuator is a direct coupled OpenAir spring return actuator engineered for precise 2 position control in commercial HVAC systems. Operating at 120V AC, this 20 lb in damper actuator is ideal for constant or variable air volume (VAV) installations, common in exhaust, mixed air, and face and bypass applications. Its compact footprint allows for seamless integration into tight enclosures, while the NEMA 1 (IP40) rated housing