17_1/4x17_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Note: Active Aqua Infinity Trays

Note: Active Aqua Infinity Trays contain recycled plastic

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

• Generates steam by energizing two electrodes that extend into the steam canister

Made of a mixture of coconut fibers and other natural materials

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

17_1/4x17_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Note: Active Aqua Infinity TraysNordic 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