Zetair filters are designed to substitute classic HEPA filters. They are equally efficient, but as they have a larger filtering surface they are easier to maintain and do not need changing so often. It also has double the airflow of conventional filters. The filtering medium is made of micronised fibreglass. The frames are made of galvanized sheet metal, with a neoprene leak-proof joint.

Efficiency: DOP 95.00%. DOP 99.99%. DOP 99.999%. Temperature: The maximum operating temperature is 80ºC. Relative humidity: 100%.