9x27x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack dis 【Coverage Area】Perfect for 3’x3’ vegetative

【Coverage Area】Perfect for 3’x3’ vegetative coverage at 20” and 2

The Max Yield Bin™ saves growers time and frustration and delivers consistent results

spray every 7-10 days

Is it compatible with other organic inputs

9x27x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack dis 【Coverage Area】Perfect for 3’x3’ vegetativeNordic Pure Custom MERV 8 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