16x22_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer and no harm to beneficial

and no harm to beneficial insects

Rich bio-organics are added to improve the uptake of nutrients and strengthen the plant's natural immunity to environmental stress

under normal circumstances can reach more than 50

so you can augment whatever setup you've already got in place or are thinking of adding to your grow room

SNS 209 will stay in the plant's leaves

16x22_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack microbial fertilizer and no harm to beneficialNordic 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