This posting restriction is what one might expect to find with companies being actively criticized for other, completely unrelated reasons. For Kimberly-Clark Filtration Products (which are polymeric), positive credit is given, where credit is due.
Via "Facilities Management" magazine online we learned that "Kimberly-Clark Filtration Products has become an ENERGY STAR Partner [with USEPA] Kimberly-Clark Filtration Products supplies HVAC system air filter media with lower pressure drops than conventional air filtration media, which translates into reduced energy costs to operate the HVAC system They offer online access to an energy cost calculator to analyze HVAC operating costs and estimate the energy savings available with various air filtration technologies. So far so good. We were not able to post graphics of Kimberly-Clark filtration products, nor could we show the nice explanatory diagram they have showing why filtration efficiency is maintained over the filter's useful life, resulting in energy savings for the customer's HVAC system. The way the website's legal statement reads, we could be in violation if we excerpted even the legal statement. So, we put up a miscellanous dirty filter shot.