13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_jondon rugged handles with reinforced stitching

rugged handles with reinforced stitching provide portability and greater weight support

which is Cooling only

Do not add PK 13-14

The installer makes a duct cutout and secures the unit with self-tapping sheet metal screws

Keeps irrigation system cleaner and running efficiently longer

13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_jondon rugged handles with reinforced stitchingNordic 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