Active Air Pre-Filter, 10"x39" Pre-Filter:Active Air Pre-Filter, 6"x24" (10 ml) per gallon

(10 ml) per gallon

Bacillus megaterium: 2

Specifications for the Phyto-MAX-4 20SP

Cleanroom Grade HEPA filter

High power

Active Air Pre-Filter, 10"x39" Pre-Filter:Active Air Pre-Filter, 6"x24" (10 ml) per gallonMake the most out of your Active Air filter with a corresponding Active Air pre filter. Find the matching size from our large collection! Why choose Active Air filters? All filters are maintenance free and feature long lasting activated virgin charcoal that keeps your air odor free. Inside each filter, the charcoal is carefully packed to ensure consistent and even air flow throughout the carbon bed for full use of the filter. Stock up on pre filters