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Model #MPB88Z

Store SKU #1005426091

MPBZ ZMAX Galvanized Moment Post Base for 8x8 Nominal Lumber with SDS Screws

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Product Overview

The MPBZ 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. Also available for 4x4 and 6x6 posts.
  • 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
  • 1-piece design simplifies installation
  • Post size: 8x8
  • Made from 12-Gauge steel
  • ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications
  • Install with 1/4 in. x 3 in. Strong-Drive SDS Heavy-Duty Connector screws (included)

Additional Resources

From the Manufacturer

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Nominal Post Size (in.)8x8Product Depth (in.)9.03 in
Product Height (in.)15.49 inProduct Width (in.)8.75 in


Base TypeRegular Post BaseConnector FinishG185 Galvanized
Fasteners IncludedFasteners IncludedFeaturesNo Additional Features
Material Connector CompatibilityWood to ConcreteNumber of Pieces1
Package Quantity1Product Weight (lb.)14.9 lb

Warranty / Certifications

Manufacturer WarrantyLimited Warranty

Questions & Answers

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Customer Reviews

  • 3.7
    out of 3 reviews
  • 0%recommend this product
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Showing 1-3 of 3 reviews
Not satisfied with the part where its gonna hold all...
Not satisfied with the part where its gonna hold all patio weight. It has very small hooks where my 8x8 post willstay. There are all chances. That the wood will get cut. I will have to use another clamp by covering it by concrete. Not satisfied.
Response from Simpson Strong-TieOct 25, 2021
Hi Nilesh, this is Colin from Simpson Strong-Tie. Thank you for your feedback. We’re sorry to see your experience with our MPBZ series did not meet your expectations. We value our customers and are committed to providing exceptional products and service. To see how we can best resolve any problems, please reach out to our Customer Service team by calling 800-999-5099.​ SimpsonStrongTie
    These are not cheap but there isn't any other moment...
    These are not cheap but there isn't any other moment bases on the market currently. These work great for top support
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
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      Showing 1-3 of 3 reviews