20x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack new_additions The system can have both

The system can have both high level (up to 30

Designed specifically for the horticulture industry

filter wrench

Using Cleanse in a recirculating or DWC system helps break down materials with lower solubility ratings

Grows healthy vegetation

20x23x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack new_additions The system can have bothNordic Pure Custom MERV 12 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