11_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Pumps & Irrigation PDF: 1700 umol/s

PDF: 1700 umol/s

even when applied at recommended rates

Sodium 150W (SPO)

the Max Fan has the power to move air efficiently

2 RAW Humic Acid - 8 oz

11_1/2x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Pumps & Irrigation PDF: 1700 umol/sNordic 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