21x23_1/2x1 MERV 7 AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Formulated for aggressive growth and

Formulated for aggressive growth and superior blooms

Scale Size: 203 x 203 x 38

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ENERGY is a product derived from traditional and organic ingredients

21x23_1/2x1 MERV 7 AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Formulated for aggressive growth andNordic Pure MERV 7 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 and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters