Zonefirst ZD-8X8 8L X 8H Parallel 2 Pos 24V S/R 30067439-890 Is the keyway and setscrew

Is the keyway and setscrew included

Efficient Diagnostics: Part of the 60T81 series terminal configuration

it provides versatile switching logic

Simplified Installation: Standard dual-hole metal bracket provides a perfect fit for faster field service

It is primarily found in high-recovery commercial water heaters

Zonefirst ZD-8X8 8L X 8H Parallel 2 Pos 24V S/R 30067439-890 Is the keyway and setscrewThe Zonefirst ZD 8X8 is a professional grade 8" x 8" parallel blade zone damper designed for precision airflow management in forced air systems. Engineered with a 24V spring return motor, this normally open (N. O.) damper provides a fail safe solution that defaults to the open position during power loss, ensuring continuous ventilation. As a direct drop in for the legacy ZDS 8X8, it features an extruded aluminum frame and parallel blade design for low