16x26x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack MH Scientifically formulated for superior plant

Scientifically formulated for superior plant nutrition

Easily adjust the water temperature in aquariums and hydroponic reservoirs with the Aquavita 300W heater

The high-airflow duct filter is designed to use activated carbon to eliminate odors and chemicals

reverse curve impeller

when plants need extra vigor and growth

16x26x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack MH Scientifically formulated for superior plantNordic 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