20x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_jondon these tubes are available in

these tubes are available in a variety of sizes and lengths

Like all LumiGrow solutions

Each paper is watermarked with our patented Criss-Cross watermark

and service reminders

and production and to aid in the management of disease

20x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_jondon these tubes are available inNordic 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