Marathon’s new “All” Aluminum Retrofit Drain constructed of Heavy Duty .081 gauge Spun Aluminum body, Heavy Duty Aluminum Ring with 12 scallops to maximizealum drainage, 10-inch Aluminum Strainer and ProSeal rubber seal that prevents water back-up issues. The drain is available in sizes of 3, 4, 5 and 6-inches. For more information, call 800-828-8424 or visit