21x21x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Water Filtration water meter

water meter

and dust cover

it's a carb boost

offering a secure fit that helps keep dust and other contaminants out

21x21x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Water Filtration water meterNordic 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