These pre-filters are used to stop small particles and dust from getting in contact with the carbon, thus preventing premature depletion of its odor-trapping ability. The pre-filters are made from 100% polyester. They are sold packaged in a plastic bag to ensure they stay clean until installation.
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Vortex Powerfans are high-performance, inline duct blowers constructed from quality steel with heavy duty attractive hammertone powdered coat fin...
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