While the formula is non-corrosive

The Lennox X6667 is an OEM high-efficiency pleated air filter engineered for the Healthy Climate PureAir PCO-20C air purification system

this 1/33 HP unit handles the demanding start-stop cycles of commercial heating environments

Leak-Free Performance: High-grade EPDM disc and O-rings provide a consistent seal up to a 15 psi differential

Field Versatility: Simplified side-mount design allows for quick insertion into a 4-inch duct slot

Armstrong Furnace R76700668 Motor 319847-401 While the formula is non-corrosiveUpgrade your HVAC system with the Armstrong Furnace R76700668 Motor, a high performance 1 2 HP blower motor designed for precision and durability. This genuine OEM Armstrong furnace part operates at 1075 RPM, providing consistent airflow to maintain optimal indoor temperatures. Engineered as a 3 speed HVAC motor, it allows for adjustable performance levels to meet the specific heating and cooling demands of your residential or commercial space.