The Vevor chimney cap is a 17" x 21" stainless steel flue cover designed to protect outdoor masonry chimneys from rain, snow, leaves, birds, and small animals. Its adjustable bottom design helps fit a range of chimney sizes for a more flexible installation. Built from 304 stainless steel, it offers strong resistance to heat and weather for long-term outdoor use. The mesh construction supports ventilation while adding spark arrestor-style protection. Pre-drilled holes and included hardware help simplify assembly and installation.