Wall- and window-mounted Z-slat grille, designed for durable, vandal-resistant ventilation. Its compact design is ideal for situations where installation depth or surface-mounting space is limited. The fine perforation keeps insects out (P1 without additional mesh, P2 with standard insect screen), and the RC2 burglar-resistant option is available for all frame types. Three versions: recessed wall grille with flange, window grille, and surface-mounted grille.