30x32x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sea Green Hydro replaceable double junction pH probe

replaceable double junction pH probe and temperature probe (for pH ATC)

100% of the time

Nordic Pure 20x20x5 Honeywell Replacement MERV 8 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”

rock phosphate

30x32x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sea Green Hydro replaceable double junction pH probeNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.