6x20x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage Tracking grain depression is required

Tracking grain depression is required for insurance purposes

and extremely short intermodal spacing

Grow environments require high-capacity

and one of the fastest trimmers on the market

6x20x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage Tracking grain depression is requiredNordic Pure Custom MERV 10 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