Air Box Jr Intake HEPA Carbon FilterDescription Maintain your grow rooms air purity: Don't let unwanted air pollutants penetrate your grow room! This equipment effectively eliminates 98% of all insects, molds, mildews, spores, pollen, dust, dander and other airborne particles down to 0. 3 microns using the MERV 13 filter. Keeps your viewing lenses clean: This device assists in keeping glass lenses free from dust and bugs. Cost effective and replaceable filters: The system includes