-great for small mycology enterprises and at home beginner's. Filterbrand: filterbuy 12"x12"x2 merv13 cloth hepa filter (6 month full use lifespan). On/off button on top for easy access. Tested successfully for 2 1/2 years in field.
(no contaminant rate of 95% or higher). U can upgrade filter to a metal or cloth filter of your choice after 6month usage is over. 12x12x2 min -12x12x4 max merv 13 or higher (hepa) cloth or metal both work fine. This item is made of custom made environmentally recycled wood box.