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It is specifically designed for use with Armstrong Series S and H pumps
15" outside diameter and an adjustable 1
What happens if the line pressure exceeds the range
This specific model is designed for 115-220V motors
Ruskin FDR25-08 Damper 318518-761 It is specifically designed forThe Ruskin FDR25 08 is a high performance 8 inch round fire damper engineered for seamless integration into fire rated partitions and HVAC ductwork. This true round fire damper features a 1 1 2 hour fire rating and integrates a 165F fusible link, ensuring positive closure and code compliant fire containment when ambient temperatures exceed safety thresholds. Built by a leader in airflow control, the FDR25 08 utilizes a heavy duty galvanized steel
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