This is a wood burning pizza oven that needed a hood cleaning last week. Look at the amount of grease build up that is on the hood and filters preventing proper air flow and causing a hot and smokey kitchen
The hood cleaning process starts with degreaser. Foaming degreaser penetrates and breaks down the grease making it very easy to remove.
Hood has been bathing in degreaser for a while. A hot water rinse leaves a spotless restaurant hood and filters in this Pasadena restaurant