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Non-Porous Environmental Surfaces
Activation of enzymes
creating a mold supported environment
Use it on your fans and ducting
Phat Filters Pre-Filter, 12" x 4" Pre-Filter:Phat Filters Pre-Filter, 39" x 12" Non-Porous Environmental SurfacesGet The Most Out Of Your Phat Filter! Phat Filter replacement pre filter replaces your used pre filter to give your Phat filter longer life by filtering out larger impurities before they have a chance to enter into the actual filter. Each pre filter is stamped with the Phat Filter logo and fits snugly over your Phat filter. The pre filter is available in all Phat Filter sizes and can be easily slid over the filter and secured with the plastic straps
