The Amerimax Deck Flash Barrier provides essential protection for your deck ledger board, fitting securely over the ledger and behind siding to prevent water damage. Made from painted galvanized steel with a baked-on factory finish, it ensures long-lasting durability. Designed with a 2-15/16" nailing edge, 1-9/16" drop, and 1/2" lip, this 8 ft. barrier is ideal for safeguarding against moisture. Use asphalt paper between the metal and pressure-treated lumber for optimal results.