11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Terp Derp – Easy cleanup post-harvest (remove

– Easy cleanup post-harvest (remove entire root zone and used media in one swoop)

with stiff nylon bevel-cut bristles remove dirt

Why DYNOMYCO® Granules

Application method: Soil surface application

11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Terp Derp – Easy cleanup post-harvest (removeNordic 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