12_3/4x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition Quantities and treatment areas are

Quantities and treatment areas are approximate

Z7 helps you keep money in your pocket to spend on other things

Black soft rubber grips and the 8

spray every 7-10 days

12_3/4x21x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Aeromixer Synthetic Pro Edition Quantities and treatment areas areNordic 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