18" SS round outdoor natural gas fire pit ring. 2 Concentric rings, 1/2" hub size. Features ports that are drilled not punched; hub is raised above concentric rings to reduce risk of water in valve or gas line. This ring is designed for natural gas applications - please call us if you would like to install it in a propane application. Shipping is free, however we ship only within the continental United States. WARNING: This product can expose you to chemicals including Carbon Monoxide (CO), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.