Silencers are installed on the inlet for positive pressure systems and on the discharge for negative pressure systems. They muffle the annoying loud shrill created by the tip speed of the wheel to a tolerable level in most cases. The units are designed with sufficient cross-sectional area to eliminate static loss through the unit. No modifications are necessary to the fan unit - just remove the existing rainhood or shutter, and bolt up and add and adjust the silencer support.
Silencers are available for all manufacturers makes and models.
Rolfes @ Boone, located on the east edge of Boone, Iowa, began business operations on April 1, 1994. Boone Cable Works & Electronics is employee owned and is a full-line manufacturer of grain termperature detection and hazard detection equipment. All design, engineering, manufacturing, and sales functions are performed "in-house" in our 22,500 square foot facility.