maintaining the original equipment's safety listing

This model is designed for single or two-speed fan control

Simplified Installation: Standard 3-wire or 4-wire hardwired setup fits existing wall-mount footprints (4

Zero Differential Operation: Operates reliably without requiring a minimum pressure drop across the valve

Overpressure Protection: Built-in IRV eliminates the need for external relief valves in most standard residential configurations

Johnson Controls P72AA-18 Pressure Control Els PW 29614 maintaining the original equipment's safetyDual Pressure Control, DPST Switch Only, 3 4" Conduit Opening, 12" to 50 Psi, Nema 1 Enclosure, No Adjustment Knob, Amoonia Use P72AA 18 is identical to P72AA 18C