21x21x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems - Output 2 (top) for

- Output 2 (top) for temperature or humidity control

The light fertilizer charge also pairs well with your conventional or organic regimen

For additional instructions and specific application rates

power consumption of 72W

21x21x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems - Output 2 (top) forNordic Pure Custom MERV 10 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