it is specifically pitched and sized for Heil Quaker and ICP systems

the control board will throw a "Pressure Switch Open" or "Closed" fault code

If you notice a "grainy" product texture or visible nicks along the edge of the 046237 blade

While designed for Daikin McQuay units

Unlike standard 1-inch retail filters

Daikin-McQuay 111048101 Sensor 30067439-890 it is specifically pitched andThe Daikin McQuay 111048101 Temperature Sensor is a precision HVAC thermistor designed for integration with MicroTech and Open Choices control systems. This wall mounted space sensor provides accurate ambient temperature monitoring and features a manual override button, allowing field technicians to force the unit into occupied mode during off schedule maintenance or testing. Engineered for high stability and low drift, the 111048101 ensures the