16x18x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack soil nutruient 120V input & output voltage

120V input & output voltage

Folded and rounded corners

8" unit with one corona discharge cell

Saves Energy

The Humboldt Nutrients team of chemists and agronomists emphasize balance and consistency with all our formulas

16x18x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack soil nutruient 120V input & output voltageNordic Pure Custom MERV 12 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