13x21x1 Exact MERV 13 AC Furnace Filters 12 Pack spl_dakine420 After saturation of entire plant

After saturation of entire plant

Adaptable to any duct/filtering system

Suggested Uses: Use to aid in the application of foliar fertilizers

The cube has 60% more water saving capability than peat

Set dimming levels (10%–115%) for each group independently based on your crop's light requirements

13x21x1 Exact MERV 13 AC Furnace Filters 12 Pack spl_dakine420 After saturation of entire plantNordic 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