High Pressure Strongest structural design. Ideal for wheel wearplates, high static pressures. Perfect for handling heavy loading flyash, cement dust, etc. For a given point of rating, this fan requires medium speed. Scroll-type housing of narrow design because of required high velocity discharge. High pressure characteristics. Power raises continually for free delivery. Used primarily for material-handling applications in industrial plants. Wheel is sometimes coated with special material. This design also used for high-pressure industrial requirements. 500-200,000 CFM. Static pressures to 100". Temperatures to 1200 Fahrenheit.