16x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Extension These blocks have an excellent

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

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

1 wheel in center

Delivers 15% more light with 35% less power

Using naturally derived premium ingredients

16x22x1 Exact MERV 14 AC Furnace Filters 6 Pack Extension These blocks have an excellentNordic 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.