16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack misc Ships via Overnight methods only

Ships via Overnight methods only

and CO2 from one centralized unit

60 min or disabled

· Never operate a lamp above or below its rated current or voltage

No Need for Cal-Mag Supplements: Rich in calcium and magnesium in the optimal 4:1 ratio

16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack misc Ships via Overnight methods onlyNordic 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