18x27x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Cloning & Seed Starting Fruits and Vegetables

Fruits and Vegetables

We carefully lay out and cut the paper properly with the grain so they roll smoothly (instead of squaring as many other tips from inferior companies do)

Efficacy 93 lm / W

the rate of reaction can be over 15 million times faster than if left uncatalyzed

rust-proof tumbler trims wet or dry

18x27x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Cloning & Seed Starting Fruits and VegetablesNordic 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