Description
29x35x1 MERV 13 AC Furnace Filters 6 Pack Power & Lamp Cords Nordic Pure 20x30x2 MERV 10 Nordic Pure 20x30x2 MERV 10 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer This large grind mix is 100% soluble and will not clog irrigation systems or leave sediment in reservoirs