The Pre Pleat HV pleated filter from Flanders Precisionaire is designed to operate in high velocity and turbulent air applications where standard pleated filters have a tendency to fail. They are ideal for gas turbine and rotary machinery equipment or any area requiring a pleated filter to operate under demanding use. PrePleat HV filters are offered in the most popular face sizes in 1" and 2" depths. A heavy-duty, die-cut, clay coated frame encloses the media pack. A 100% hydrophic synthetic media is bonded to a corrosion-resistant, 1-1/4 in. mesh expanded metal backing which is substantially heavier than standard metal backing. These features result in a more efficient, durable and reliable product.