14x18x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Chemicals magnesium & manganese

magnesium & manganese

or soil based media)

Root Zone aeration helps improve overall root structure

optimum heat management

One case of (8) GC 30 makes 240 gallons of full-strength disinfection solution (100 ppm)

14x18x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Chemicals magnesium & manganeseNordic 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