Product Description ECOFILTER is an ultra high performance air purifying filter with specialized structure that cannot be found in any others in the market. Structured with normal temperature activated oxidation catalyst, porous activated carbon pellet and Nano-Silver coating, ECOFILTER is a multifunctional filter which satisfies high level of dust filtering, deodorization, nitrogen oxide reduction, harmful gas elimination and antifungal performance. Product Feature 1)Effectively removes dust, Nox, harmful gas, odor, fungous, and etc. with a single filter with 4 layers (dust filter + Catalyst...