16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack extension which is dedicated to bringing

which is dedicated to bringing low-cost hydroponic techniques to developing countries

Net weight (lb) 2

Power Draw - 230W

keep these leaves in the greenhouse until new parasites emerge

16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack extension which is dedicated to bringingNordic 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