gibson carbon postfilters Size:15-1/8" x 5" x 5/16" This increases the time between

This increases the time between filter changes

Compact & lightweight design

Grounded flour

purchase Aprilaire

Filter Media - Synthetic

gibson carbon postfilters Size:15-1/8" x 5" x 5/16" This increases the time betweenPackage contains 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