20x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_jondon The simple

The simple

and service reminders

and production and to aid in the management of disease

Easily move heavy plants with the Plant Dolly

20x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_jondon The simpleNordic Pure Custom MERV 10 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