Lightweight, decorative cast aluminum chimney / chimney topper for masonry chimneys. The easy to install, outside mount base fits over and tightens to chimney flues that range from 7.5 to 9.5 x 11.5 to 13.5 inches. Includes 4 stainless adjustment screws. Can also be used to cover a chimney liner or pipe up to 10 inches in diameter. Includes cast aluminum body, base, mounting hardware and stainless spark arrestor screen with removable top cap.