17_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers EASY TO USE

EASY TO USE

Recommended Accessories: 200 mesh filter

Max-Fan™

and better flowers

secure shut-off

17_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers EASY TO USENordic Pure Custom MERV 8 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