9x27x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack complete-systems dead pests may not be

dead pests may not be visible as they often retreat to secluded areas

4 RAW Calcium/Mag - 2 oz

flicker-free performance that will be good for your plants for years to come

How It Works:

9x27x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack complete-systems dead pests may not beNordic 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