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The Phoenix 18x18x2.5-inch HEPA air filter, MPN 4031864, is the 2nd stage filtration for the Guardian R Pro 500 CFM HEPA Air Scrubber System. This aftermarket filter is designed to replace the 4031864 HEPA filter. It features HEPA filtration with an efficiency of 99.97% @ 0.3µm.
HEPA filter designed for the Phoenix GuardianR Pro HEPA system. Provides filtration efficiency of 99.97% @ 0.3µm.
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