Deck2wall Black Plastic Ledger Spacer. Item 810698 Model D2W58L100. Versatile design helps prevent rot at deck ledgers, stair stringers, shade structures, posts and more. 11/16-In diameter bolt hole accepts up to a 5/8-in hex bolt for extra heavy loads. Injection molded glass fiber filled polypropylene is rugged, durable and non corrosive.