Multi-flue caps are installed when there are multiple flues in a chimney that are spaced close together, or when a more symmetrical appearance to the chimney is desired. Multi-flue caps provide better weather protection for the chimney top and are fastened to the chimney top with stainless steel masonry fasteners. Our multi-flue chimney caps are manufactured by National Chimney and constructed from 304 stainless steel or copper. Powder coating is available in a variety of colors with the stainless steel option. Standard overhang for cap lids is 3" per side and our standard screen height is 12".