17_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_magfan Three dual ball-bearing exhaust fans

Three dual ball-bearing exhaust fans with PWM motors quietly expel heat (at a maximum 33

Keeping with CenturionPro’s reputation for innovation

Resist Disease

full-size dimensions and volume to provide maximum growing area

quicker results

17_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_magfan Three dual ball-bearing exhaust fansNordic Pure Custom MERV 10 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition