21_1/4x23_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety so it won’t easily come

so it won’t easily come loose from fittings or drains

resulting in outstanding results when used in 2

ACTIVE AQUA 70 GALLON PREMIUM RESERVOIR KITS

Made from the finest ingredients

21_1/4x23_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety so it won’t easily comeNordic 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