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This SPST temp control (Single Pole Single Throw) is engineered with a specific 65 degree open and 75 degree close logic
this specific model is indexed for horizontal mounting only
the gas orifice must be sized correctly for the specific BTU requirements of your furnace's fuel source
Structural Durability: The galvanized steel construction resists corrosion
Cleveland Controls DFS-221-153 Switch This SPST temp control (SingleThe Cleveland Controls DFS 221 153 is a precision engineered airflow proving switch designed for critical monitoring in duct heaters, commercial ovens, and high demand HVAC systems. This differential air pressure sensing switch features a factory fixed setpoint of 0. 05" W. C., making it an ideal choice for applications requiring a non adjustable, tamper proof safety control. Built with a robust zinc plated housing and a high performance silicone