11-1/2 in. x 11-1/2 in. Raccoon Screen in Stainless SteelHY C Animal Control products prevent animals from entering attics, crawl spaces and vents where they can destroy wiring, cause leaks and do severe damage to homes. HY C Raccoon Screens offer a reliable solution to pest exclusion. With tamper proof bolt on attachment method, animal pests are unable to remove the screen to gain access to the chimney liner. California residents see Prop 65 WARNINGS 100% 304 stainless steel constructed with heavy 18 Gauge