12x24x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack Promote Root Royal has a high

Root Royal has a high water absorption rate and maintains 30% air porosity

Large Easy-View windows offer progress view access without compromising your growing environment

Due to supplier restrictions

Built to last with heavy duty

Wait at least 2 weeks before replanting treated soil

12x24x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack Promote Root Royal has a highNordic Pure 12x24x4 Pleated Air Filters MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, smog, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a