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Most commonly called "throwaway filters", these are the fiberglass weave or "hog hair" filters that are designed meet the minimum requirements of protecting your air handler (furnace or Air Conditioner) and its components.
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The pleated filter is for those wanting to step up from a basic furnace filter. Pleated filters offer better protection against dust and other airborne particulate. This filter goes beyond protecting your HVAC equipment and helps clean the indoor environment.
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NationalFilterSales.com offers a complete selection of OEM and aftermarket replacement filters for residental air cleaners.
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This extended surface air filter is designed for most medium and high efficiency air filtration systems. It is capable of operating in systems with rated face velocities of 500 CFM to 3000 CFM. 3 different efficiency ranges are offered. These filters are extremely versatile and suitable for almost any commercial or industrial air handling system. These filters are presently in use in over 20,000 applications, including hospitals, automotive plants, office buildings, universities, pharmaceutical facilities, and sports arenas around the world.
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