The Pre Pleat Class 1 pleated air filter has been tested by Underwriters Laboratories, Incorporated and found to meet the stringent performance characteristics of a Class 1 air filter for flammability, as outlined in Standard 900. Class 1 air filter units are described as "Those that, when clean, do not contribute fuel when attacked by flame and emit only negligible amounts of smoke. The filter consists of a nominal 50% dust spot efficiency micro-fine fiberglass filtration media that has been bonded to a corrosion-resistant expanded metal backing, and then pleated into either standard or high capacity packs. Each pack is encased and sealed within a die-cut frame which is manufactured of special mineral-filled board to resist flammability. Pre Pleat Class 1 pleated air filters are offered in two inch depth in all of the most popular face sizes.
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People spend up to 90% of their time indoors, we know it’s vital to make sure your indoor air quality (IAQ) is the very best it can be. That is why we only sell filters from trusted manufacturers. Minimize indoor air pollution, maximize your HVAC performance, and keep your air comfortable and healthy. When it comes to the air your breathe don't settle for less.