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. 12 in standard pipe (12 ID, 15 3/8 OD) UL127 listed 1700 deg pipe.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. 12 in standard pipe (12 ID, 15 3/8 OD) UL127 listed 1700 deg pipe. See More
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. 12 in standard pipe (12 ID, 15 3/8 OD) UL127 listed 1700 deg pipe.
