Designed specifically for the White-Rodgers or Electro-Air 20 x 26 air cleaner. Each filter measures 20-5/16 x 26 x 5/16". These carbon filters are for all SST2000, SST20, 20C26S-xxx, 20C27S-xxx.
These filters are the full size of the air cleaner and not split in pairs like the original White-Rodgers filters. One permatron carbon filter replaces a pair of the F825-0469 carbon filters.
These Permatron carbon filters simply side right in.
A quick cleaning of the prefilter is recommended once a month. Simply vacuum or rinse with a hose. Washing the cells would be recommended every 6 months. See brochure for more info.
Permatron charcoal filters exceed manufacturer specs with 14 grams of carbon per square foot along with a low 0.06 wg air resistance.
Vapors are pulled by molecular action in to tiny pores and held. In manufacturing the carbon, the activation process creates millions of micropores. The pores are sized and formulated to remove common household VOC's.
Permatron carbon filters are made in Illinois. The foam, activated carbon, and steel frame are all products of the USA.
Permatron prefilters are also made in Illinois. The polypropylene and steel frame are products of the USA.