Important note: the length is the stretched length. not the length that the pipe is packaged. Specification : Material : Aluminum Color : Black Diameter : 25mm 42mm 60mm 75mm Length : 60-300cm (extendable Length) 1.Diameter: 25mm 25mm-60cm: Before stretching length :35cmAfter stretching length :60cm 2.Diameter: 42mm 42mm-150cm: Before stretching length :65cmAfter stretching length :150cm 3.Diameter: 60mm 60mm-100cm: Before stretching length :36cmAfter stretching length :100cm 60mm-180cm: Before stretching length :78cmAfter stretching length :180cm 60mm-300cm: Before stretching length :140cmAfter stretching length :300cm 4.Diameter: 75mm 75mm-100cm: Before stretching length :36cmAfter stretching length :100cm 75mm-200cm: Before stretching length :85cmAfter stretching length :200cm Important note: In order to facilitate transportation, the product will be properly compressed, the size will be different after receiving the product, please be sure to stretch to the required length. The length of the pipe is the stretched length, not the length that the pipe is packaged. Please stretch it lightly and fully to get the length that you need. If you have difficult to get the length, please ask someone to stretch together. If you still have difficult to get the length, please to solve the problem. Fitment : For Webasto, Dometic, Planer etc. For diesel air heaters for Air paking heater Car/Truck/Boat/Heavy machine /Agricultural machinery/industrial machinery If you have any question, please feel free to . Package include : 1 x Air Heater Duct Pipe Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.