Selkirk Sure-Temp 6" x 36" Stainless Steel Insulated Pipe is designed for durability and efficiency, featuring a stainless steel outer casing and inner liner. Its double-wall construction includes solid pack insulation, providing superior insulation and performance. Selkirk's Sure-Temp pipe has been rigorously tested and can withstand temperatures of up to 2100 degrees Fahrenheit, far surpassing the normal operating temperature of 1000 degrees Fahrenheit. It is UL (Underwriters' Laboratories) listed, ensuring compliance with safety standards and ing peace of mind. When it comes to safety, this pipe provides a minimum of just 2" to combustible materials, making it suitable for a range of installations. Its stainless steel thickness is robust, with both the inner lining and outer casing measuring at .012", while the couplers are .016". The insulation within the pipe has a density of 23 lb/cu ft, ensuring efficient heat retention. Model Number: 206036