Active Air Pre-Filter, 8"x39" Pre-Filter:Active Air Pre-Filter, 6"x16" It has an industrial-grade motor

It has an industrial-grade motor for years of use

Apply evenly throughout the crop and try to apply to foliage

If you have a medium-sized hobby grow or small scale commercial grow

Part Two Of The Easiest Two Part Base Nutrient Regiment On The Market

Active Air Pre-Filter, 8"x39" Pre-Filter:Active Air Pre-Filter, 6"x16" It has an industrial-grade motorMake 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