ROUND GRILLE WITH MESH FI 70 GRAY Round ventilation grilles with mesh are the end pieces of supply and exhaust ventilation systems for rooms inside and outside the building. They are recommended for installation in spiro pipes and for plastic ventilation systems and under flat roofs. An advantage of this ventilation grille is the mesh poured into it during production, which keeps insects away from the apartment. Our unique method involves incorporating the mesh into the design at the production stage, so it doesn't get dirty, tear, or damage, and is the same color as the grid – permanently retaining its aesthetic value. The shape of the louver directs air "downward" , which prevents drafts in rooms where our ventilation grille is located. **