Make 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 to ensure you've always got the cleanest, most efficient Active Air filter in your grow room!

Pre-Filter Only! Carbon Filter Sold Separately