All stoves, ranges, candy kettles, doughnut kettles, ovens and hot plates in restaurants and other food establishments shall be equipped with a metal canopy of a size at least four inches longer than the entire cooking surface of the cooking device, on all sides. The canopy shall be ventilated to the outside air by a separate ventilating flue of not less than six inches in diameter, for an ordinary stove, or as much larger as the Health Department may deem necessary for effective operation.
(1966 Code, § 7-15) (Ord. 187, Art. 2, § 29)