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With a fixed open temperature of 170 degrees F and a fixed close temperature of 130 degrees F
22 and ASME Section IV standards
it includes an integrated circuit breaker for overcurrent protection
as this unit supersedes all previous iterations of the 624345 series for improved long-term durability in the field
What media can be used with the NBR seal
Honeywell ARD18TZ Damper THPU32HP7Y With a fixed open temperatureThe Honeywell ARD18TZ is an 18 inch round automatic bypass damper designed for precision airflow control in multi zone residential and light commercial forced air systems. This 24V spring return damper operates as a power closed, spring open component, ensuring failsafe ventilation or bypass bypass performance. Constructed with heavy duty galvanized steel, the ARD18TZ features a reinforced drive blade backed by synthetic bearings for quiet operation