The Simpson 6x6 Elevated Post Base EPB66 is a cast-in-place post base from Simpson engineered to anchor 6x6 posts and columns securely to concrete foundations in deck and patio cover applications. Designed for installation in wet concrete, it creates a lasting structural connection while providing the code-required standoff that keeps post ends clear of moisture at the base - helping protect against rot and extending the life of the installation.

Key Features

• Cast-in-place installation in wet concrete - set the base before concrete cures for a strong, integrated connection that does not require drilling into hardened concrete after the fact
• Code-required 1 in. standoff when properly installed, with adjustability up to 2-1/2 in. above concrete - meets code minimums straight out of the box while giving you flexibility to fine-tune clearance height for varying site conditions
• Added standoff adjustability - accommodates a wider range of structural applications where additional post elevation is needed beyond the minimum code requirement
• 12-gauge base plate with 1-1/16 in. OD x 8 in. pipe construction - heavy-gauge components deliver structural integrity at the critical post-to-concrete transition point
• Simpson Strong-Tie gray paint finish - provides a consistent, finished appearance and baseline corrosion resistance for covered outdoor structural applications
• Not recommended for non top-supported installations such as fences or unbraced carports - knowing the correct application up front helps you specify the right connector and avoid installation issues

Why This Product

• Built-in rot protection by design - the standoff feature keeps the post end elevated above the concrete surface, reducing direct moisture contact at one of the most vulnerable points in a deck or patio cover structure
• Flexible standoff height for real-world job conditions - the ability to dial in between 1 in. and 2-1/2 in. of clearance means the connector adapts to your pour and site requirements rather than forcing a single fixed height
• Wet-concrete installation saves time on new pours - embedding the base during the initial pour eliminates a return trip to drill and anchor into cured concrete, streamlining the construction sequence for decks and patio covers
• Sourced from Simpson, a trusted name in structural connectors - the EPB66 is manufactured in the United States and carries the engineering backing and code compliance documentation that contractors and inspectors rely on

Specifications

• MPN: EPB66
• Member Size: 6x6
• Base Plate Gauge: 12
• Pipe: 1-1/16 in. OD x 8 in.
• Coating: Simpson Strong-Tie Gray Paint
• Finish: Simpson Strong-Tie Gray Paint
• Install With: 0.162 in. x 3-1/2 in. nails
• Country of Origin: United States

Approved Applications

• Deck post and column base connections to concrete
• Patio cover post and column base connections to concrete
• Cast-in-place installation into wet concrete
• Top-supported structural post installations requiring an elevated standoff

Downloads and Resources

• View Specifications

Frequently Asked Questions

What standoff height does the EPB66 provide above the concrete surface?

When properly installed, the EPB66 provides the code-required 1 in. standoff above the concrete surface. If desired, the standoff adjustability allows up to 2-1/2 in. of clearance above the concrete, making it adaptable to a variety of application requirements.

Can the EPB66 be installed in wet concrete?

Yes. The EPB66 is a cast-in-place post base designed specifically for installation in wet concrete, allowing it to be set and secured before the concrete cures for a strong, lasting connection.

What post size is the EPB66 compatible with?

The EPB66 is designed for use with a nominal 6x6 post or column size.

Is the EPB66 suitable for fences or unbraced carports?

No. The EPB66 is not recommended for non top-supported installations, such as fences or unbraced carports. It is intended for top-supported structural applications such as decks and patio covers.

Note: Product dimensions and/or screw or bolt holes may differ from picture. Please refer to the item description for specifications.