Superior 5-inch Diameter Section Flex Pipe - 17 1/2" - 35 1/2" Length PF58-9275 inch Diameter Section Superior Flex Pipe 17 1 2" 35 1 2" Length PF58 927 Product Details This is Superior's 5 inch Diameter Section Flex Pipe, with a length ranging from 17 1 2" to 35 1 2", known as PF58 927. Ensure flexible and efficient venting for your fireplace system with this adjustable length flex pipe component. Features: Size: 8 Inches Color: Stainless Steel Flex pipe 5" inner diameter, 8" outer Flexes from 17 1 2" to 35 1 2" This unit