Treated Lumber, Deck & Fences USP offers a versatile line of decking, wood fencing and pipe rail products in corrosion resistant finishes. These connectors are designed to help build safe, code-compliant decks, and to make your fence building and repair projects quick and simple. Visit us to custom design your new deck with our USP deck design software. You'll love the look and durability of our #1 Southern Pine deck lumber in Above Ground & Ground Contact treatments. Our best quality Rough Sawn Western Red Cedar provides beauty and durability and is perfect for your home fencing needs.