21x21x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Hydro Components Its coated metal guard will

Its coated metal guard will not rust or corrode

and lightweight

Each kit features an controller located on the power cord

Recommended pumps: AAPC1010 or AAPC1020 or AAPC20

21x21x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack Hydro Components Its coated metal guard willNordic 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