generalaire carbon postfilters Size:15-1/8" x 5" x 5/16" 4 inches x 9¼ inches

4 inches x 9¼ inches x 13 inches & Ship Weight: 8lbs

This increases the time between filter changes

purchase Aprilaire 213 or Aprilaire 413

therefore allowing the system to operate at its optimum efficiency

generalaire carbon postfilters Size:15-1/8" x 5" x 5/16" 4 inches x 9¼ inchesPackage contains 1 set of 3 filter, giving one filter change. Carbon postfilters to remove odours and gases. These filters should be installed in the small track closest to the furnace, on the air outflow side of the air cleaner cabinet. The filters should be spaced evenly from the back to the front of the cabinet, with gaps between the filters. By design, the filters will not fill the entire depth of the cabinet. Lifespan: 3 6 months