NCCO1804 Air Filter$17.99 HEPA Filter X 1 for NCCO1804 *Change HEPA filter in every 6-18 months. Lifetime may vary in different environment. NCCO1804 Air Filter quantity Add to cart Category: b-MOLA Products Related products Add to cart b-MOLA BM300 Air Treatment Unit Plus $2,238.00 Add to cart b-MOLA NCCO1701 Air Treatment Unit $299.00 Add to cart NCCO1702/1701 Air Filter $24.99