16x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack BVV Available in Biomin Calcium and

Available in Biomin Calcium and Biomin Iron

Optional multi-level

This precise blend of fossilized organics target the areas of your plant that control bud development and assists with the production of essential oils and aromatics

8" High-Output In-Line Duct Fan

16x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack BVV Available in Biomin Calcium andNordic Pure Custom MERV 7 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