18x27x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack odor-control • Promote horizontal root branching

• Promote horizontal root branching

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Please Note: The MBS-Pro requires the SPH-1 for supplemental power

• For vegetable crops: apply 2-4 weeks after emergence

Outer Dimensions: 1 1/4''

18x27x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack odor-control • Promote horizontal root branchingNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.