16x21_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack garden-accessories Escherichia coli O157:H7

Escherichia coli O157:H7

This design results in a precise cut for your buds while reducing clean up time

Not all worms are created equal

Coverage - Veg 7' x 7'

Total UMOL Output : 299

16x21_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack garden-accessories Escherichia coli O157:H7Nordic 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