1. Wide pleats, easy to clean ash;
2. Top opening, bottom opening / backing / small hole installation;
3. Unique inner rotation, outer protection side belt;
4. Special flame retardant properties;
5. Galvanized rust-proof metal structure;
6. Rubber ring seal
Suitable for plasma, laser cutting, welding fume and other working conditions in large steel structures, shipbuilding, automobile manufacturing, metal processing and other industries.