As its name suggests, the operating room exhaust air grille (Grilles) is used to control the direction of exhaust air in the operating room. This grille’s distribution pattern involves a steady descent from the ceiling.

The air duct of the operating room’s wall is where the operating room return grille with the anesthesia socket is mounted at a convenient height and locations where anesthesia can be administered. After the anesthesia operation, the anesthetic gas tube is inserted into the anesthetic socket fitted to this grille, allowing return air to remove any residual anesthetic gas from the operating room environment. If wall return grilles are required in operating rooms without anesthetic sockets, aluminum airfoil Grilles should be used.