Siemens Building Technology GRD121.1U Actuator 319848-301 eliminating airflow bypass issues common

eliminating airflow bypass issues common with third-party filters

How do I verify if this fits my rooftop unit or furnace

Technical Benefits for Contractors: Direct OEM Replacement: Replaces legacy part number HD44AE120

requiring fewer fittings

Siemens Building Technology GRD121.1U Actuator 319848-301 eliminating airflow bypass issues commonThe Siemens GRD121. 1U is a high torque 24V fire and smoke damper actuator engineered for precise 2 position control in critical life safety systems. As a veteran technician knows, reliability in smoke containment is non negotiable; this OpenAir electronic actuator delivers 30 lb in of torque to ensure positive closure against high velocity airflow. Operating on 24 VAC DC, the GRD121. 1U features a robust spring return fail safe mechanism that