Always verify the specific thermostat and defrost board configuration of the equipment

serving as the direct replacement for Y66T13-0

the 7K801 provides a direct-fit solution for Fluid Control Division hardware

making it an ideal choice for technicians performing HVAC flue repairs or upgrading existing natural draft appliances

Whether used as a boiler pressure limit control or a pump safety switch

Zonefirst ZDB-10X12 10HX12W Parallel 24V 2-Pos S/R Refrigerant Always verify the specific thermostatThe Zonefirst ZDB 10X12 is a professional grade parallel blade zone damper engineered for precise airflow management in residential and commercial 24V zoning systems. This 10HX12W bottom mount damper features a heavy duty extruded aluminum frame and 3 inch parallel blades, ensuring minimal static pressure drop while maintaining a rigid structure across the duct opening. Driven by a 24V spring return motor, the unit is factory configured for power