9x27x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack drying-racks A 29% liquid concentrate solution

A 29% liquid concentrate solution that adds oxygen to nutrient solutions through the decomposition of hydrogen peroxide

Pennsylvania

Reduces humidity to desired level

0 is rated to 100 lbs

unlike competitors

9x27x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack drying-racks A 29% liquid concentrate solutionNordic Pure Custom MERV 7 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition