21x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Ventilation we’ve eliminated the mast entirely

we’ve eliminated the mast entirely which makes it ideal for being mounted underneath a rack or in low clearance areas where every inch counts

ornamentals

Revolutionary odor control

• Necessary for chlorophyll formation

21x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Ventilation we’ve eliminated the mast entirelyNordic 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