The counterclockwise (CCW) lead end rotation is essential for correct blower wheel orientation and optimal static pressure development within the venter housing

the shaft is designed to accept standard OEM fan hubs used in the HGE series

this collector box serves as the primary junction for managing furnace condensate drainage

It is standard practice to inspect or replace the mounting gasket when installing the 4311200 to ensure a gas-tight seal against the collector box

replacing the draft inducer assembly is often the necessary path to restoring system safety

Modine 5H0798020000 Fan Blade 318973-401 The counterclockwise (CCW) lead endThe Modine 5H0798020000 Fan Blade is a critical OEM replacement part engineered for high performance service in Modine unit heaters and HVAC systems. This heavy duty 18 inch diameter fan blade features a 3 blade configuration and a 1 2 inch bore, designed to meet exact factory RPM specifications and balance requirements. In the field, using an authentic Modine 5H0798020000 ensures that the motor remains within its design amp draw and static pressure