20x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack beneficial microbes PPF: 200 umol/s

PPF: 200 umol/s

per pack:                       0

• Exhaust

We've upgraded the speed of our industry-leading Model M trimmer

Chemboys Humic Liquid improves plant immunity

20x23x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack beneficial microbes PPF: 200 umol/sNordic Pure Custom MERV 13 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