23_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements guaranteeing the user's safety and

guaranteeing the user's safety and preventing premature ballast failure that can occur in other brands due to inferior plug designs

This meter easily fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn't get in your way

Cups are manufactured in Humboldt County

Volume: 1024 Gallon

23_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements guaranteeing the user's safety andNordic 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