rheem carbon postfilters Size:15-1/8" x 5" x 5/16" It is especially ideal for

It is especially ideal for older electronic air cleaner cabinets

Installs underneath main HEPA filter

3-speed electronic keypad control

The media is also bonded to a metal grid that adds stability

1x Formaldzorb Canister Insert

rheem carbon postfilters Size:15-1/8" x 5" x 5/16" It is especially ideal forPackage 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