8_1/2x30x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixtures Handles available on sizes #3-#30

Handles available on sizes #3-#30

Four side windows with zipper

preventing efficient photosynthesis

Optimal Conditions: 68°-77°F

prevents over-drying

8_1/2x30x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack commercial-lighting-fixtures Handles available on sizes #3-#30Nordic Pure Custom MERV 14 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