White-Rodgers 5D51-78 Fan and Limit ControlThe White Rodgers 5D51 78 Fan and Limit Control is a universal type control that regulates fan or blower operation while acting as a high limit safety device. It is designed for reliability in furnaces and air handlers, with an open on rise contact configuration for precise, fail safe performance. Designed for compatibility with many furnaces and air handlers, the 5D51 78 handles a wide temperature range (100 to 300 Deg F) and adjustable 15 Deg F

Diameter: 22 inches

Enclosed enclosure protects electronics in dusty

Maximum inlet pressure: 1/2 psi

This blade helps maintain balanced airflow and supports efficient

The stainless steel body provides durability in demanding environments

Application: Gas furnace

this component supports efficient system control and longer equipment life

Thread size: 3/4 inch (designated size) for easy mounting

With 1/4 inch threaded ports and a robust aluminum body

Horsepower: 1/5 HP for reliable airflow

Built for enduring high-heat operation and long service life

1/2 in inverted-flare cartridge engineered for precise control in valve assemblies