Wall grille designed for high-intensity ventilation, with a physical open area of 78% and very low K-factors: large volumes of air flow through a limited surface area. Available with a flange (Type G) or without a flange (Type N), and equipped as standard with aluminum clips for excellent fire performance. It can be combined with the DucoWall Classic W 70HP continuous louver cladding system to create a uniform façade appearance within a single project.