6" Diameter x 38"-70" Telescoping Single Wall Black Stove PipeOur 38" to 70" telescoping length of single wall black stove pipe allows you to easily adjust the length of pipe to fit. No cutting necessary. Adjusts from 38" long up to 70" long. Single wall stove pipe requires an 18" clearance to combustibles and can not be cut down. Built to last our single wall stove pipe is made of 21 gauge steel which is 9% thicker than 22 gauge steel and 27% thicker than 24 gauge steel Painted with high temperature black paint