21_1/4x21_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES G-Rex Application and Usage

G-Rex Application and Usage

it is then put into storage in those cells until ready for use

The flanges can also be reversed to prolong the life of the filter

It eliminates deficiencies and harmful salt build up

Adjust-a-Drive MOTOR ONLY

21_1/4x21_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES G-Rex Application and UsageNordic 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