Ventilation grille with swing louvres AMR-K 150x350MM 0,8KG Ventilation grille with swing louvres AMR-K 150x450MM 1KG Ventilation grille with swing louvres AMR-K 100x1000MM 1,5KG Ventilation grille with swing louvres AMR-K 150x650MM 1,3KG Ventilation grille with swing louvres AMR-K 150x550MM 1,2KG Ventilation grille with swing louvres AMR-K 150x1200MM 2,4KG Ventilation grille with swing louvres AMR-K 100x600MM 0,9KG Ventilation grille with rotary louvres AMR-K 100x200MM 0,4KG