17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Water Treatment making it more sound absorbing

making it more sound absorbing and rustproof

Black soft rubber grips & the 14

capacity and sold in cases of 432

Years of research and extensive testing have resulted in a truly unique PK formulation that enhances the vigor of plants during their blooming phase

& “Shady Edges"

17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Water Treatment making it more sound absorbingNordic 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