Active Air Pre-Filters old ph-ec-tds-meters-and-solutions Technical Specs: 11 x 11

Technical Specs: 11 x 11 x 4

You can also use it to swap out a faulty

fossilized kelp and mycorrhizae will help you grow a lush bountiful organic garden

Unique Triple switch

Active Air Pre-Filters old ph-ec-tds-meters-and-solutions Technical Specs: 11 x 11Make the most out of your Active Air filter with a corresponding Active Air pre filter. Find the matching size from our large collection, which is individually shrink wrapped with UPC code for easy display and sale. 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