11" x 9" laminar flow hood with high output dual fans, activated carbon pre filter, H14 HEPA filter, and variable speed controller. Use as a sterile work environment in plant tissue culture, precise electronics repair (cell phones), and mushroom inoculation. included: 1 - True Hepa H14 filter 1 - Activated carbon pre filter 2- High output 120v fans with variable speed controller. 1 - Custom made 3d printed housing from recycled plastic Replacement pre filters and HEPA filters are available through our store.