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• Exhibiting the highest action on red absorbing phytochrome regulated germination
with 1800 μmol/s of photosynthetic photon flux (PPF 400-700nm)
With its durable all-aluminum exterior construction and offset high/low component orientation
Patented Digital DistributionTM optical technology ensures that 65% of the light emitted is contained within the 50º beam angle
21 1/2x24x1 Exact MERV 13 AC Furnace Filters 6 Pack Air Filter • Exhibiting the highest actionNordic Pure MERV 13 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 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200
