Special Features: Down flow principle. Assures high collection efficiency. Modular design with no moving parts. Low maintenance and replacement of cartridge elements are easy and quick. Fair air to filter the ratio assures longer life of cartridges. Variety of fabric material. Cartridges are normally of synthetic. Webbed material. However, other materials can be supplied to suit individual application. Quality and reliability. Dependable products with inbuilt quality for trouble-free operation.