8x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack vacuum pump The kind sweet and sour

The kind sweet and sour aroma of the organic Sour-Dee is what you need to give your crop the characteristics that you desire

The brush stands up to wet and tough conditions

It eliminates algae by covering the top of the media

created to eliminate odors in your office or home

8x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack vacuum pump The kind sweet and sourNordic 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