Front and back media retainers are an integral part of the filter frame. The media pack is bonded to every part of the frame, preventing any possibility of air by-pass. Integral pleat separators on the 4" filters provide additional pleat stabilization for the most demanding applications.

APPLICATIONS
These filters can be used without modification in side-access filter housings or built-up filter banks. They offer better efficiency than conventional permanent or disposable flat filters. When used as pre-filters, these filters substantially extend the life of more expensive high-efficiency filters. They are the perfect filter for residential, commercial and industrial use.

FEATURES AND BENEFITS
It is possible for a flat filter to face load, thus restricting airflow and placing unnecessary strain on equipment. The filters are also engineered to provide maximum efficiency. Generally, the deeper the pleats the longer filter life between changeouts.