21_1/4x21_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack trays storage solution and pH 7

storage solution and pH 7

The 1000 spins counter clockwise and the 5000 spins clockwise

For those pesky annuals

Non-skid soles provide added traction to help prevent accidental slips and trips

00 (in) Height 7

21_1/4x21_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack trays storage solution and pH 7Nordic Pure Custom MERV 7 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