The 30/30 Dual 9 Air Filter is designed with improved filter media that utilizes a proprietary progressive dual-layer blend with identified by white fibers on the upstream side and green on the downstream side.
Unique dual layer media in the strongest moisture resistant beverage board enclosing frame
True MERV 9 maintained efficiency throughout the life of the filter
Radial pleats, welded wire grid backing
Guaranteed to last 12 months in commercial duty applications and 9 months in industrial level applications