Zonefirst SPRD-20X12 Damper 30067439-890 For technicians performing unit heater

For technicians performing unit heater maintenance

it maintains a critical fixed spark gap of 1/8 inch to ensure reliable arc-over even in fluctuating residential or industrial environments

Key Benefits: High-Temperature Resistance: Performance-rated up to 300°F for use in residential and commercial steam systems

The brass friction washers are crucial for allowing the packing nut to slide without twisting the seal or the glass

Zonefirst SPRD-20X12 Damper 30067439-890 For technicians performing unit heaterThe Zonefirst SPRD 20X12 is a professional grade barometric static pressure regulating damper designed for precision airflow management in multi zone residential and light commercial HVAC systems. Constructed from heavy duty 22 gauge galvanized steel, this 20" x 12" rectangular bypass damper utilizes a single blade, counter balanced weighted arm mechanism to maintain optimal duct static pressure. As zone dampers close, the SPRD 20X12 automatically