Simpson Strong-Tie 4 in. x 4 in. ZMAX Adjustable Post Base

The Simpson Strong-Tie 4 in. x 4 in. ZMAX Adjustable Post Base is designed to attach structural wood posts to existing concrete for decks, patio covers, and other top-supported applications. Engineered for versatility and uplift resistance, it features a slotted base that enables flexible positioning around anchor bolts for precise post placement. Constructed from heavy-gauge steel with a ZMAX galvanized protective finish, this post base delivers superior corrosion resistance for exterior applications and preservative-treated wood. An integrated standoff elevates the post end above the concrete foundation to help prevent moisture rot and comply with building code requirements.