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Regulates beneficial nutrients
* High dehumidification capacity
Both pH-balancing aids are manufactured using the highest-quality ingredients: potassium hydroxide to raise pH and nitric acid to lower pH
- Integrated Socket and 15' Lamp Cord
18x27x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_fluence Regulates beneficial nutrientsNordic Pure Custom MERV 14 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