20x27x1 Exact MERV 7 AC Furnace Filters 6 Pack pumps-and-irrigation-supplies If you change your pre-filters

If you change your pre-filters and the product water still flows slowly then it’s an indication you need a new membrane

The unique formulation promotes immediate uptake for hydration and nutrition and keeps stems clear and free flowing

Sodium Bicarbonate (baking soda)

Only Hormex is Hormogenized™ – our exclusive process that assures consistent

20x27x1 Exact MERV 7 AC Furnace Filters 6 Pack pumps-and-irrigation-supplies If you change your pre-filtersNordic 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