17_1/4x17_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies For use with the Hydrologic

For use with the Hydrologic water filtration systems in indoor garden hydroponics

Features stator-blade fans which can deliver strong airflow from high static-pressure ductwork

Integrated sensor for better application flexibility

Force of Nature Insect Repellent can be applied to all plants

and so do your favorite plants

17_1/4x17_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies For use with the HydrologicNordic 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