While a clogged orifice can cause performance issues

preventing premature thermal stress or cracking common in aftermarket alternatives

Common Questions Is the MCP-8031-5111 compatible with non-metallic plenum requirements

it ensures precise fitment and restores factory-spec heat staging in AAON air handlers and rooftop units

Lennox 15W75 Blower Wheel 326058-758 While a clogged orifice canFor high demand HVAC repairs, the Lennox 15W75 Blower Wheel is a critical OEM replacement part designed for belt drive air handling units. This 10" x 10" blower wheel features a 1" bore size, ensuring a precise shaft fitment for standard commercial and residential blowers. Constructed from high grade galvanized steel, it is engineered for corrosion resistance and long term mechanical integrity in high static pressure environments. The CCW (counter