15x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom Expand & Plant Premium Coir

Expand & Plant Premium Coir Granules w/ Nutrients and Perlite

one side black (Black/Clear)

and veggies require a special nutritional mix to ensure high yields

pressure compensating torturous path

Another approach is to veg and bloom plants only in this block

15x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack rock-bottom Expand & Plant Premium CoirNordic 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