The Simpson PBST44Z PBST ZMAX Galvanized Standoff Post Base is a cast-in-place connector from Simpson engineered to create high-performance wood-to-concrete connections for decks, patio covers, porches, and other outdoor structures. Built with S-shaped stiffening tabs and a heavy-duty ZMAX galvanized coating, this 4x4 post base is designed to deliver long-lasting structural integrity in demanding outdoor environments where moisture exposure and load performance are both critical considerations.

Key Features

• 1 in. standoff between post and concrete - keeps the base of the wood post clear of moisture that collects on concrete surfaces, reducing rot risk while meeting applicable code requirements for post base installations
• S-shaped stiffening tabs - enhance load-bearing performance and provide increased download capacity, giving outdoor structures a stronger, more dependable foundation
• Compatible with nails, bolts, or Strong-Drive SD Connector screws - gives installers the flexibility to choose the fastening method that best suits the job, whether working with nails, 1/2 in. diameter bolts, or SD Connector screws
• Flush installation in wet concrete with shallow embedment depth - simplifies the concrete pour process and allows for precise post placement without complicated setup
• Embossed vertical straps - increase overall strength and stability throughout the connection, supporting both vertical and lateral demands on the post
• Heavy-gauge steel construction (base 12 ga.; strap 14 ga.) - provides a robust, rigid connector capable of handling the structural demands of decks, porch posts, and patio cover applications
• ZMAX galvanized coating - offers superior corrosion resistance compared to standard galvanizing, making this post base well suited for outdoor applications where weather exposure is an ongoing factor

Why This Product

• Built-in moisture protection by design - the 1 in. standoff separates the wood post from direct contact with the concrete surface, addressing one of the most common causes of post deterioration in outdoor structures without requiring additional hardware
• Engineered for strength where it counts - the combination of S-shaped stiffening tabs and embossed vertical straps works together to improve both download capacity and overall structural stability, making this base a reliable choice for load-bearing post applications on decks and porches
• Versatile fastening options reduce job-site hassle - compatibility with nails, bolts, or Strong-Drive SD Connector screws means contractors and builders are not locked into a single installation method, supporting efficiency across different project requirements
• ZMAX coating for long-term outdoor performance - the thicker zinc layer of the ZMAX finish provides superior corrosion resistance specifically intended for connectors exposed to weather, helping this post base maintain structural integrity over the life of the structure

Specifications

• Model Number: PBST44Z
• Member Size: 4x4
• Coating/Finish: ZMAX
• Gauge: Base 12 ga.; strap 14 ga.
• Width 1: 3 9/16 in.
• Width 2: 3 1/2 in.
• Height: 6 1/4 in.
• Depth: 3 1/2 in.
• Install With: Install with (14) 0.162 in. x 3-1/2 in. nails, (14) #10 x 1-1/2 in. Strong-Drive SD Connector screws (SD10112) or (2) 1/2 in. diameter bolts
• Country of Origin: United States

Approved Applications

• Decks
• Patio covers
• Porches
• Other outdoor wood-to-concrete structural connections

Frequently Asked Questions

What size post is the PBST44Z designed to fit?

The PBST44Z is specifically designed for use with 4x4 nominal lumber posts, making it ideal for standard deck, porch, and patio cover post applications.

Why is the 1 in. standoff between the post and concrete important?

The 1 in. standoff helps protect the base of the wood post from direct contact with moisture that can accumulate on concrete surfaces, reducing the risk of moisture-related rot. This standoff distance also meets applicable code requirements for post base installations.

What fastener options are compatible with the PBST44Z?

The PBST44Z offers installation flexibility and is compatible with (14) 0.162 in. x 3-1/2 in. nails, (14) #10 x 1-1/2 in. Strong-Drive SD Connector screws (SD10112), or (2) 1/2 in. diameter bolts.

What makes the ZMAX coating suitable for outdoor use?

The ZMAX galvanized coating provides a thicker zinc layer than standard G90 galvanizing, offering superior corrosion resistance for post bases exposed to weather and outdoor conditions - making it well-suited for decks, patio covers, porches, and similar exterior structures.

Note: Product dimensions and/or screw or bolt holes may differ from picture.