This listing is for a large or standard canvas square stove jack for a maximum either a 5" (standard size) or 8" (large size) diameter stove pipe. (You can use with 2 to 5" or 8" stove pipes, depending on the size of the stove jack.)  The stove pipe must be located in the center of the gray woven stove jack material and not touching the canvas fabric. It is specifically made to be either sewn in or glued on a canvas tent. It is made from gray 500°F woven fiber glass fabric that is silicone coated for waterproofness and a perimeter and rain flap of fire retardant 10oz natural canvas. The natural canvas perimeter allows this stove jack to be glued (with contact glue or fabric glue) or sewn (either by hand or machine) onto a canvas tent. The stove jack is designed to be mounted on the exterior of the tent. Either a round hole (for horizontal mounting) or an oval hole (for slated mounting on the side of the tent) must be cut with either a pair of scissors or razor blade.  There is a attached protective outer canvas rain cover that can be use when a stove pipe is not needed or rolled up when stove pipe is present.  It is brand new and carries the full warranty by Bear Paw Wilderness Designs. Large stove jack 8" maximum stove pipe. 18" x 18" Standard stove jack 5" maximum stove pipe. 14" x 14"