Wallair manufactures the N40974 fan grille, measuring 9.2 cm by 9.2 cm. This grille is designed to protect fan blades and enhance safety. It is typically used in ventilation systems and cooling applications. https://elecena.pl/product/28865776/wallair-20100314-fan-grille-9-2cm-metal-protection-against-blades 2025-05-31 https://elecena.pl/product/28865776/wallair-20100314-fan-grille-9-2cm-metal-protection-against-blades 2025-07-28