30x30x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack hydro-systems Spectrum - 380-410nm

Spectrum - 380-410nm

Great care and precision went into developing our Sorter

Guard ‘n Spray should not be used more than twice per day

dolomitic lime and an organic wetting agent

30x30x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack hydro-systems Spectrum - 380-410nmNordic Pure Custom MERV 7 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