16x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Extension The EC/TDS conversion factor is

The EC/TDS conversion factor is user-selectable as well as the temperature compensation coefficient (

These blocks have an excellent water absorption and (re)saturation rate and feature the exclusive Plant Comfort fibre structure which has a lower density of resistance during rooting with no loss of firmness

1 wheel in center

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16x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Extension The EC/TDS conversion factor isNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.