Tretco OBRSS-BK1-18-NG 18 in. Stainless Steel Ring Kit Natural Gas Tretco was set out to bring out a wide range of fireplace supplies. Our collection includes Gas Logs, Valve key, Connection hose and Wine barrel fire pit. We offer the top notch products by combining both extraordinary design and functionality to make a brilliant choice for your outdoor. Our fire pits would make an ideal addition to any outdoor space and are sure to be cherished for years to come. Our 304 Stainless Steel burner rings are the standard in the industry. But we didn't stop there, we added Thru-Mount Construction for un-restricted gas flow. This hi-flow design allows for bigger taller flames. Our NG kit comes complete with hoses, keyed ball valve and connections. Specifications Collection: Tretco Assembly Required: False Diameter: 18 in. Construction Material: 304 Stainless Steel No.of Concentric Rings: 2 Connection: Center 0.5 in. NPT Connection Fuel: Natural Gas