United States and Foreign Patents Granted - These products are protected under one or more of the following U.S. and foreign patents:

5,370,722 • 5,529,593 • 6,197,077 B1 • 2170244 • 95904185 • 6-2113 • 7,323,028 • 7,416,577 • 8,726,954 B2 • 7,416,577 B2 • 7,842,116 B2 • Other Patents Pending.

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Equipment Protection Pre-Filters – Pulley Mount Cottonwood Filter Screen

Pulley Mount Filter System (Patented)
This easy to use ahu inlet filter system is easy to operate by simply pulling on a couple of ropes which raise and lower the filter over the intake louver.
This AHU Inlet Filter (commonly called cottonwood filter screens, hvac intake filter, air intake screens etc.,)  eliminates / reduces the need to climb on a ladder and significanly cuts down on the
time needed to remove or install the filter during the winter off-season and spring start-up.