FMI 12S-8DM Chimney Support Pipe, 12 in L, Stainless Steel, Galvanized

Inner and outer pipe. The outer pipe, made of galvanized steel, provides cooling air necessary to maintain safe chimney temperatures, while the inner pipe, made of stainless steel, emits gases out of the fireplace. Snap- lock design. UL127 Listed. Up to 1700 Degree Pipe. The outer pipe, made of galvanized steel, provides cooling air necessary to maintain safe chimney temperatures, while the inner pipe, made of stainless steel, emits gases out of the fireplace. Snap- lock design. 12 standard pipe (12 inner diameter, 15 3/8 outer diameter) UL127 Listed 1700 Degree Pipe.Double wallStandard pipeLength: 12Size: 12 ID x 15-3/8 ODSnap- lock designMaterial: Stainless SteelFinish: GalvanizedFor systems over 30 lengthInner and outer pipeThe outer pipe, made of galvanized steel, provides cooling air necessary to maintain safe chimney temperatures, while the inner pipe, made of stainless steel, emits gases out of the fireplaceUL127 Listed 1700 Degree Pipe.