The ZoneFirst ZPS Zone Plenum Sensor is a critical duct-mounted sensor designed for accurate supply air temperature monitoring in both residential and commercial HVAC zoning systems

5 x 15 dimensions under high RPM and thermal stress

By installing these genuine 1-inch 25AUB-1 replacement parts

eliminating the need for separate relay mounts and long wire runs

As a universal service replacement

ASCO 304-359 Rebuild Kit Refrigerant The ZoneFirst ZPS Zone PlenumThe ASCO 304 359 Rebuild Kit is a specialized professional maintenance solution for Asco 8210 series solenoid valves, specifically the 8210G100 and EF8210G100 models. As a critical component for maintaining high performance HVAC and plumbing systems, this kit ensures the internal integrity of your electrically actuated flow control valves. Each kit includes a comprehensive set of factory specification parts: a valve bonnet, solenoid base assembly,