FLEXIBLE CHIMNEY LINER EXTENSION, DIMS: 5"DIA. X 2'-5" L, GALVANIZED STEEL COLLAR, ALUMINUM FLEX-PIPE, *TO BE INSTALLED IN A MASONRY CHIMNEY WHERE THERE IS A MINIMUM OF ZERO INCH AIR SPACE BETWEEN COMBUSTIBLE MATERIALS AND THE CHIMNEY EXTERIOR* WEIGHT: 2 LBS. 4 OZ., COUNTRY OF ORIGIN: UNKNOWN,