FIT DIFFERENT SIZES - Equipped with an adjustable valve, the diameter of the bottom can be adjusted within a range of 1cm (0.4 inch); You can tighten the adjusting collar to accommodate different pipe sizes, saving your time and effort; To get the perfect size for your chimney tubes, measure the outside diameter of your flue pipe; Available for pipe sizes ranging from 7.9 to 8.3 inches (flue outside diameter).EFFECTIVE CHIMNEY PROTECTION - Our galvanized steel chimney cap comes with an 11.8' large cap to prevent rain and snow from getting into your chimney flue, ensuring security during use; Also, the meshes provide better ventilation and keeps debris and animals out; This humanized design makes the chimney cap a perfect outdoor protection solution, saving your extra expenses.STURDY & DURABLE - Constructed of 0.5-mm galvanized steel, the chimney cover features water and heat resistance that can withstand harsh weather conditions, including typhoons, rain, snow and intense sunlight; A cone top and the mesh structure integrated for added strength and resistance to deformation; With fine workmanship, the surface without any sharp edges provides comfortable touch feeling, protecting your hands from injuries while installing.QUICK ASSEMBLY - Simply follow the instruction manual included in the package; The adjustable valve makes it effortless for just one person to complete the installation successfully; Just place the cap on the chimney and screw it on, saving your time and effort; A good pair of assembly gloves is included to avoid scratches.GE SCENARIOS - Maximize your chimney's combustion with this fireplace chimney cap; It protects the chimney by exhausting smoke and protecting the burning function of the stove; Whether it's a wood-burning stove, oil-burning stove, or outdoor mud stove, our chimney top cap ensures smooth smoke discharge, allowing you to enjoy smoke- heating both indoors and outdoors