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It is 8" square and contains over twice the amount of rockwool as the popular Hugo block
Weed & Disease Control
and more overall crop homogeneity
solvent is distilled and recovered
- Heavy Duty
20x34x1 MERV 14 AC Furnace Filters 6 Pack Cleaning Products It is 8" square andNordic 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.
