FIT DIFFERENT SIZES - Adjustable valve: the bottom diameter can be adjusted within 1 cm (0.4 inch). Tighten the adjusting collar to fit different pipe sizes, saving time and effort. - Sizing guidance: measure the outside diameter of your flue pipe. Compatible with pipe sizes ranging from 7.9 to 8.3 inches (flue outside diameter). EFFECTIVE CHIMNEY PROTECTION - An 11.8-inch cap diameter helps prevent rain and snow from entering the chimney flue, supporting safe use. - The mesh design provides ventilation while keeping debris and animals out. - Practical outdoor protection solution that can help reduce extra expenses. STURDY & DURABLE - Made from 0.5-mm galvanized steel with water and heat resistance to withstand harsh weather, including typhoons, rain, snow and intense sunlight. - Cone top and integrated mesh structure offer added strength and resistance to deformation. - Finely finished surface with no sharp edges for a comfortable grip during installation. QUICK ASSEMBLY - Includes an instruction manual; the adjustable valve enables installation by one person. - Place the cap on the chimney and screw it on to complete installation; a pair of assembly gloves is included to prevent scratches. GE SCENARIOS - Maximize chimney performance by exhausting smoke and protecting the stove’s burning function. - Suitable for wood-burning stoves, oil-burning stoves, or outdoor mud stoves; ensures smooth smoke discharge for indoor and outdoor heating.