Charcoal filters are an essential element for masking annoying odors in your indoor cultivation. These filters are made from activated charcoal powder, which has the particularity of retaining the odors that pass through it. For this to work, you'll need to connect it to an air extractor, but you'll need to connect your charcoal filter for indoor cultivation to an extractor of the same diameter. If you use a carbon filter smaller than necessary, it will reduce the extractor's power and shorten its service life. Discover the best brands of activated carbon filters on the market with Bullfilter australian carbon, Phresh filter usa, prima klima filter, hy filter +carbon or can filter original. Our filters absorb 99.9% of unpleasant odors. Delivery is free for orders over €89 in mainland France.