Description: Size: Base Diameter is 6.3" - Fits 1.8" to 3.9" Outside Pipe Diameter Material: Constructed of a durable steel base to prevent rust and cracking, and silicone resistant to 300 degrees high temperature. Function: The anti scalding stove jack for the firewood stove tube in the tent can prevent tent from being burned. Fine Workmanship: Easy to fix to a tent. Great craftsmanship to effectively prevent outdoor fire. Wide Applications: Great for use with bell tents, tipi, yurt, cabins, sheds, boats, boathouses, summer homes, workshops, garages, and anything else that needs a flue outlet. Specification: Material:Silicone, Steel Size: 16cmx9cm/6.3inchx3.54inch Package Includes: 1Tent Stove Jack Note: Please allow slightly errors due to manual measurement and different monitors.