20_1/2x25_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification flowering and the production of

flowering and the production of essential oils and fragrances of flowers and herbs

• Reduce fungus and bacterial damage

resistance is not likely to develop

salt and high UV conditions

Works with the ratchet pawl for shear band adjustment

20_1/2x25_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification flowering and the production ofNordic Pure Custom MERV 13 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