Leyso Chinese Wok Range Adapter/Reducer with 13-Inch Cast Iron Rim - Convert The Large Wok Well to Smaller Size (20" to 13") Maxitrol The "pipe thread size" is

The "pipe thread size" is measured and based on the inside of the pipe

Noise level 48 dB

The restaurant exhaust fans are on the roof

Dimensions - 6"W x 6

Leyso Chinese Wok Range Adapter/Reducer with 13-Inch Cast Iron Rim - Convert The Large Wok Well to Smaller Size (20" to 13") Maxitrol The "pipe thread size" is[Welded Metal] Leyso chinese wok range adapter is made from all welded metal making it extremely durable even after hard commercial usage. [Longer Lasting] Cast iron rim making it longer lasting different from other brands. [Versatile] Wok range adapters are perfect for restaurant, kitchen, hotel and buffet to convert the chinese wok range hole smaller in order to use a smaller wok. [Conversion] Converts the 20 wok hole to use as a 13 wok hole. This