Description: Prevent rust and cracking Includes rubber collar that resists ozone and harsh weather Tent firewood stove pipe burn prevention oven jack can prevent tent from burning. Easy to attach to tent .Excellent craftsmanship effectively prevents outdoor fire. Silicone resistance is about 280 degrees Adapted chimney: 4.5-10cm (over 4.5cm need to cut the apron by yourself) Color: Orange size:16*16*9cm Delivery Quantity: 1 piece, Kind tips 1. Package content: only the above package content, excluding other products. 2. The size is measured manually, please allow 1-2 cm measurement error. 3. Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Instructions: (1) Open the chimney hole in the tent: 1. Determine the position of the chimney mouth on the tent, 2. Mark the position of the screw hole on the chimney mouth according to the circular steel sheet and open the hole. (2) Cut two wear-resistant materials with the same shape as the steel sheet according to the circular steel sheet of the silicone sleeve (it can also be replaced by thick fabric) This step can also be omitted, but the addition of wear-resistant materials can better protect the tent from abrasion (3) Put the cut wear-resistant material and steel sheet on the inside of the opening of the tent, align the screw holes and insert the screws from the inside to the outside (4) Put wear-resistant materials, silicone sleeves, and steel sheets on the outside in sequence, and tighten the screws with nuts to fix them (5) Cut off the tent fabric inside the silicone ring to complete the hole (6) After installation, insert into the chimney and use it. When the diameter of the chimney is greater than 4.5cm, you can cut the silicone ring by yourself!