The Simpson MPB66Z MPBZ ZMAX Galvanized Moment Post Base for 6x6 is an innovative, engineered connector from Simpson Strong-Tie specifically designed to provide moment resistance for wood columns and posts. Its unique sleeve design encapsulates the post and prevents it from rotating at its base when lateral loads are applied at the top, giving specifiers and contractors greater design options and the opportunity to reduce the need for bracing - creating more unobstructed views. This off-the-shelf solution saves the time and expense involved in designing, calculating, and ordering custom-fabricated parts.

Key Features

• Tabs inside the MPBZ provide the code-required 1 in. post standoff to help prevent rot from standing water and ground moisture
• Stamped indicators and internal tabs identify the required concrete embedment depth
• Strategically placed holes simplify installation to allow template attachment
• Optional obround holes have been added for attaching trim material
• Additional holes at the embedment line allow standing water to exit and a point of visual inspection
• One-piece design simplifies installation
• Post size: 6x6
• Made from 12-gauge steel
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications

Specifications

• Model Number: MPB66Z
• Member Size: 6x6
• Gauge: 12
• Width: 5-9/16 in.
• Height: 7-1/4 in.
• Coating/Finish: ZMAX
• Country of Origin: United States
• Installation Fasteners: Install with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (included)

What's Included

• 1/4 in. x 2-1/2 in. Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screws

Frequently Asked Questions

What makes the MPB66Z different from a standard post base?

Unlike standard post bases, the MPB66Z features an innovative sleeve design that encapsulates the post and provides moment resistance, preventing the post from rotating at its base when lateral loads are applied at the top. This can reduce or eliminate the need for additional bracing and create more unobstructed views.

Does the MPB66Z include the required installation fasteners?

Yes. The MPB66Z includes 1/4 in. x 2-1/2 in. Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screws needed for installation.

How does the MPB66Z protect the wood post from moisture damage?

Internal tabs provide the code-required 1 in. post standoff, keeping the wood post elevated off the concrete to help prevent rot from standing water and ground moisture. Additional holes at the embedment line also allow standing water to exit and serve as a point of visual inspection.

Is the MPB66Z suitable for use with pressure-treated lumber and exterior applications?

Yes. The MPB66Z features ZMAX galvanization, which offers extra corrosion resistance specifically suited for exterior and treated-wood applications. The 12-gauge steel construction combined with the ZMAX coating makes it a durable choice for demanding outdoor environments.