21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack extraction Nordic Pure 20x25x1 MERV 10

Nordic Pure 20x25x1 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

and soilless rooting media

RAW B-Vitamin

* 510 Cartridge Compatible

Wooden Packing Size 23

21_1/2x23_5/16x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack extraction Nordic Pure 20x25x1 MERV 10Nordic 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