23x25x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc Also contains non-plant food ingredients

Also contains non-plant food ingredients

mycorrhizae and dolomithic limestone to adjust pH

and a chain breaker

This makes for easier spreading

23x25x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack misc Also contains non-plant food ingredientsNordic Pure Custom MERV 12 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