The grids are composed of sand-a maze shaped to create quiet zones where the particles, which have reduced the kinetic energy on impact against the metal surface, may precipitate on the bottom without being taken up by the airflow.
- Frame in galvanized steel thickness 1,0 mm;
- Blades in galvanized steel thickness 1,0 mm.
- Blades spacing 150 mm.
- Galvanized steel, stainless steel (AISI 304, 316), anodized or natural aluminium;