Permatron Carbon Filter for White-Rodgers 20¼ x 21 (4 Pack)

White-Rodgers vs Permatron Filters

While both White-Rodgers and Permatron carbon filters are designed for the SST series air cleaner; Permatron filters have advantages over the White-Rodgers brand.

Activated Carbon Filter - Odor Control

Permatron's activated carbon absorbs odors and fumes. Whereas the collector cell captures particulate, the carbon captures noxious gasses.

Permatron charcoal filters exceed manufacturer specs with 14 grams of carbon per square foot along with a low 0.06 wg air resistance.

The carbon is finely ground resulting in over a million square feet of surface area. The carbon is impregnated into the filter media and heat set. There are no loose granules, the filter can be rinsed or vacuumed.

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 Brochure
• Permatron Website

Quality Construction

Permatron prefilters and carbon filters are constructed with a rugged galvanized steel frame. The frames do not easily kink or push out of square. They are not flimsy like the Honeywell brand.

The prefilter polypropylene weave is gripped solid by the steel frame. Very good quality.

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.