23x25x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification Nordic Pure 14x14x1 MERV 8

Nordic Pure 14x14x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Hydroponic applications:

A 2 oz package of RAW Full Up makes up to 200 gallons

Weeds with a deep root system may require a second treatment or a stronger concentration

These professionally formulated nutrients provide high performance ingredients in a simple to use program

23x25x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification Nordic Pure 14x14x1 MERV 8Nordic 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