17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_ps and increase comfort

and increase comfort

weekly or over the seasons

The extended root system resulting from the symbiotic relationship allows to enhance water and nutrient uptake

while avoiding the risks of inhaling dusty powders

17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_ps and increase comfortNordic Pure Custom MERV 12 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