110-200000 Transom Backing Plates, Aluminum (Pair) from Bob's Machine. Ensure the stability and durability of your boat's transom installation with this pair of Bob's Machine 110-200000 Transom Backing Plates. Designed for reliability and made from aircraft grade aluminum, these backing plates provide robust support, preventing stress and damage to the transom, and ensuring a secure foundation for your boat's equipment. Dimensions: 15-1/4" x 2-1/2" & 13" x 2-1/2" Manufactured out of aircraft grade aluminum Sold as a pair They can be customized Warning: Product may contain materials cautioned by California Proposition 65