23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro 2 speed settings

2 speed settings

including Spray-N-Grow

Special UV-resistant composition

commercial row crops

Nordic Pure 20x30x1 MERV 14 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro 2 speed settingsNordic 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