Robust Construction: Housed within a protective box to safeguard sensitive SPDT switch components from debris and mechanical damage

Precision Control: Features a sensitive pressure switch adjustable from 0

The Vulcain VA301IRFSR404A (also identified by part number M-509255 or S301-IRF-R404A) represents the industry standard for high-precision R404A refrigerant gas detection in mechanical rooms and chiller plants

within its 0-5 PSI operating range

a licensed HVACR technician should perform the replacement to ensure all safety interlocks are functioning correctly

Reznor 211791 Grill Assembly 320788-703 Robust Construction: Housed within aThe Reznor 211791 Grill Assembly is a critical OEM component engineered specifically for the Reznor UDAS series unit heaters. This 3. 5 inch diameter exhaust grill ensures proper venting and flue gas discharge, maintaining the pressure balance required for high efficiency combustion. As a direct replacement part, the Reznor 211791 prevents debris ingress and protects the exhaust outlet from environmental factors that can compromise airflow. For