7_3/4x25_3/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Grow Tents Continue to apply at 2

Continue to apply at 2 ml/L (8 ml/gallon) through bloom until harvest

The slower pace that these predatory mites feed at (5 mites per day) and their ability to sustain themselves on pollen allows them to survive longer in low pest populations

gnats and fleas

4" x 8" Standard Carbon Air Filter

and the greatest steering capabilities available

7_3/4x25_3/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Grow Tents Continue to apply at 2Nordic 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