11_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Tents & Tarps it does double-duty

it does double-duty

They can live for up to one month as adults and lay up to 200 eggs in that period

FIFRA 25(b) exempt

submersible water pump

identification and counting

11_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Tents & Tarps it does double-dutyNordic 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