14x18x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions versatile B

versatile B

Horizon Lift

Didymella bryoniae (Gummy Stem Blight) and several leaf spot diseases such as Alternaria and Entomosporium

and culinary herbs as well as propagation of vegetable and ornamental crops

Fruiting Vegetables

14x18x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions versatile BNordic 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