ensuring a drop-in fit without the need for mounting bracket modifications

A yellow hue indicates high moisture content

As a 24V AC solenoid coil

HVAC SUPER PRO is as permanent as a brazed joint and guaranteed to last the life of the system

Zonefirst SPRD-9 Damper Els PW 17895 ensuring a drop-in fit withoutThe Zonefirst SPRD 9 is a professional grade 9 inch round barometric static pressure regulating damper engineered for precise HVAC bypass management in multi zone systems. This mechanical, non electrical component utilizes a weighted counter balance arm to automatically relieve excessive static pressure as individual zone dampers close. When the air pressure in the supply plenum exceeds your calibrated setpoint, the damper blade opens to bypass air