23_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack grow media increase efficiency of water use

increase efficiency of water use and drought tolerance

per gallon of water applied every 3-4 days

A 30-liter pail of ONA Gel attaches securely to the bottom of the Carbon-Air unit

Continue your journey to becoming a master cloner with a commercial grade cloning machine

Ralstonia solanacearum (Brown Rot

23_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack grow media increase efficiency of water useNordic Pure Custom MERV 13 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