The Simpson MPB44Z MPBZ ZMAX Galvanized Moment Post Base for 4x4 by Simpson Strong-Tie is specifically designed to provide moment resistance for wood columns and posts. With its innovative sleeve design, the MPBZ encapsulates the post and keeps it from rotating at its base when lateral loads are applied at the top. This provides both the specifier and the contractor with greater design options and the opportunity to reduce the need for bracing, creating more unobstructed views. This innovative off-the-shelf solution has been engineered and tested to save specifiers and contractors 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: 4x4
• Made from 12-gauge steel
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications

Specifications

• Model Number: MPB44Z
• Finish: ZMAX
• Coating: ZMAX
• Gauge: 12
• Member Size: 4x4
• Country of Origin: United States
• Install With: 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws (included)

What's Included

Each pack contains (1) MPB44Z Moment Post Base - Zmax Finish, 1/4 in. x 2-1/2 in. Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screws.

Frequently Asked Questions

What is the purpose of the MPBZ's sleeve design?

The innovative sleeve design encapsulates the post and keeps it from rotating at its base when lateral loads are applied at the top. This provides both the specifier and the contractor with greater design options and the opportunity to reduce the need for bracing, creating more unobstructed views.

Why does the MPB44Z include a post standoff, and how large is it?

Tabs inside the MPBZ provide the code-required 1 in. post standoff to help prevent rot from standing water and ground moisture, keeping the wood post elevated above the base of the connector.

What type of corrosion protection does the ZMAX finish provide?

ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications, making the MPB44Z well-suited for outdoor use where exposure to moisture and treated lumber is expected.

What fasteners are used to install the MPB44Z, and are they included?

The MPB44Z is installed with 1/4 in. x 2-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws, which are included with the post base.