14x22x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack plant-care/pest-&-disease-control maintaining relative humidity at 55%

maintaining relative humidity at 55% in a contained environment

#714215 is shipped in a poly bag inside a cardboard carton

This duct grille was designed to be wall mounted and connected to ducting to act as an air intake or exhaust in various ventilation

Can be mixed into fertilizers and soils

Additional/individual fittings may also be purchased separately

14x22x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack plant-care/pest-&-disease-control maintaining relative humidity at 55%Nordic 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