8x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Big Foot Granular is the

Big Foot Granular is the next generation of mycorrhizae that will supercharge your grow

The clear polycarbonate cover allows full sun exposure while keeping out the cold

• Increases propagation success rate

It will help develop a thick

8x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Ventilation/Air Conditioning Big Foot Granular is theNordic Pure Custom MERV 7 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