Outer filters prolong the lifespan of the inner filter allowing your air filtration system to operate at an optimal level with maximum effectiveness. This replaceable Outer Filter is designed for the Rikon® 62-400 and 62-450 air cleaners. It will capture 85% of particles five microns in size or larger. The average life of this filter is approximately four to eight weeks when used regularly, though the actual life of the filter will depend on the amount of dust created each day.

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