17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition 5-inches Long

5-inches Long

Zyme incorporates other select biocatalysts that directly assist enzymes by increasing the speed of natural processes in the rhizosphere

0 pH to 14

Start growing on a small scale

Use Guano Grow Crazy to promote fast

17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition 5-inches LongNordic Pure Custom MERV 14 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