Made in the USA, this Duro-Shield Single Flue Multi-Fit aluminum chimney cap by HY-C is a smart choice for chimneys everywhere. The hood is made from 18 gauge diamond embossed aluminum and the mesh is 16 gauge aluminum expanded metal. Braces are 1/8" and 1" extruded aluminum. The Duro Shield easily attaches with stainless steel nuts and bolts.