Product details:
The Forever 5/8 in. Mesh Spark Arrestor Cap 14 in. x 1 in. stainless steel. Superior animal proof oval hole mesh prevents creosote buildup. 21 in. x 25 in. 24 Gauge hood, 20 Gauge one piece base with built in 5/8 in., 8 in. high mesh screening. Adjustable will fit flue sizes from: 11 in. x 15-1/2 in. to 14 in. x 18-1/2 in. This cap conforms to California spark arrestor codes.