18x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Air Purification pharmaceutical

pharmaceutical

The HR-F increases tying efficiency by 3 times

Sustainable: Is produced in energy efficient and environmentally friendly facilities

5” adjustable ports for vent fans/ducting

iPonic 624—Finally

18x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Air Purification pharmaceuticalNordic 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