11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Dispensary Diamond Black contains an exceptionally

Diamond Black contains an exceptionally high percentage of plant-active humates

FirmGrip non-skid blue shoe covers are designed for tough working environments

metabolism

Covers the porthole so that evaporation of the nutrient solution is minimized

11_1/2x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Dispensary Diamond Black contains an exceptionallyNordic 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