Air Box 4, Stealth Edition (10")The Air Box 4, Stealth Edition (10) is an indoor garden Air Filter that helps to get rid of odors for up to 18 months. This robust air filter keeps carbon content in check and ensures air is fresh in your growing area. The highly efficient Air Box 4 contains virgin coconut charcoal, knowing for excellent results in odor elimination. The installation of these air boxes is absolutely easy, and they can be installed to almost any kind of filtering or