Adjustable and compatible design - Adjustable valve allows the bottom diameter to be fine tuned within a 1 cm (0.4 inch) range. Tighten the adjusting collar to fit different pipe sizes, saving time and effort. - To get the perfect fit, measure the outside diameter of your flue pipe. This cap is available for pipe sizes ranging from 7.9 to 8.3 inches (flue outside diameter). Effective chimney protection - A 11.8 inch large cap helps prevent rain and snow from entering the chimney flue, enhancing usage reliability. - The integral mesh provides better ventilation while keeping debris and animals out. - Thoughtful design combines outdoor protection with practical functionality, helping reduce extra expenses. Sturdy and durable construction - Made from 0.5 mm galvanized steel with water and heat resistance to withstand harsh weather, including typhoons, rain, snow, and strong sun. - Cone top plus an integrated mesh structure add strength and resist deformation. - Smooth-finished surface and no sharp edges ensure a comfortable, safe touch during installation. Easy and quick assembly - Clear instruction manual included for straightforward setup. - The adjustable valve enables one-person installation: place the cap on the chimney and screw it on. - Includes a good pair of assembly gloves to prevent scratches and protect your hands. Ge scenarios - GE scenarios: maximize chimney performance by efficiently exhausting smoke and protecting the stove’s burning function. - Suitable for wood-burning stoves, oil-burning stoves, and outdoor mud stoves. - Ensures smooth smoke discharge, enabling effective heating both indoors and outdoors.