We make stove jacks in four different sizes to fit about any size stove pipe. A standard stove jack handles up to a 3" diameter stove pipe. They can be easily sewn into about any tent material. They have a slight taper to the top so that they can be located close to the peak of the tent. You can cut the hole for the stove pipe with a pair of scissors or a sharp knife. We use gray 500 deg F fiber glass fabric that is silicone coated for waterproofness. An additional 500 deg F flap covers the stove ppe hole and rolls up when in use and helps deflect rain water. There is a removable protective outer silnylon rain cover that can be use when a stove pipe is not needed. The rain cover serves as an excellent rain protection. Medium 14" bottom x12" top x13" height for 3" pipes (4.3 oz).