Ventilation hood systems and devices shall be sufficient in number and capacity to prevent grease or condensation from collecting on walls and ceilings and to prevent the collection of smoke and noxious odors in the food service establishment. Ventilation hoods meeting the requirements listed in OAC 158:50, Mechanical Industry Regulations, shall be installed above commercial heat-processing equipment that causes grease vapors and smoke. This equipment includes but is not limited to deep fat fryers, broilers, griddles, and fry grills.
Okla. Admin. Code § 310:257-7-53