Hy-C  Multi Flue Chimney Caps are designed for those chimneys that have multiple flue liners.  These Stainless Steel chimney caps come in a large assortment of  stock sizes.  Custom sizes are available, please be sure to provide us the outside measurement of the last course of brick at the very top of the chimney along with your flue height extending above the cement cap.  This style cap is also available in Copper.