Instructions:(1) open the tent chimney hole: 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 round steel plate and open the hole. (2) according to the round steel plate of the silicone sleeve, cut two wear-resistant materials with the same shape as the steel plate (thick fabric can also be used instead)This step can also be skipped, but adding wear-resistant materials can better protect the tent from wear(3) put the wear-resistant material and steel plate on the inside of the tent hole, and insert the screws from the middle into the screw holes. (4) place wear-resistant materials, silicone bushings and steel plates outside and tighten the bolts with nuts to fix them. (5) cut off the fabric tent inside the silicone ring to complete the opening(6) after installation, put it into the chimney and use it. When the diameter of the chimney is more than 4.5cm, you can cut the silicone ring by yourself! Specification:Name: tent anti-scald chimney silicone coverWeight: 340g Silicone tolerance is about 280 degreesSuitable for chimney: 4.5-10cm (more than 4.5cm, you need to cut the rubber ring by yourself)This:1*anti-scald silicone cover for tent chimneyNotes:1. Due to various factors such as monitor brightness, light brightness, etc., the actual color of the product may be slightly different from the picture displayed on the website.2. Please allow slight manual deviation