Aluminum Flexible Pipe for Chimney Pipe Size: 4" 5" 6" Inches Length: 8 to 9 Feet After Expension This Chimney Installation Pipe is Compatible & Works with Chimneys of all Top Brands which Includes Faber, Elica, Hindware, Sunflame, Gilma Prestige, Kaff, Glen, G4, Butterfly & more. Any Chimney.