26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control or up to 7 days

or up to 7 days with this easy-to-use controller

• 1/4" x 60" SS JIC braided hose

Best part about it

• Perfect for Koi ponds

These MERV plus activated carbon

26x30x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack pest-and-disease-control or up to 7 daysNordic Pure Custom MERV 13 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