The Simpson EPB66HDG EPB Hot-Dip Galvanized Elevated Post Base for 6x6 by Simpson is a cast-in-place post and column base engineered to securely anchor 6x6 posts or columns to concrete - ideal for decks, patio covers, and other exterior structural applications. Its hot-dip galvanized finish delivers superior corrosion resistance, while the built-in elevated standoff design provides the code-required 1 in. clearance that helps protect post ends from moisture and rot. Key Features Added standoff adjustability to suit a variety of applications Install in wet concrete Provides the code-required 1 in. standoff when properly installed; allows up to 2-1/2 in. of standoff above concrete (if desired) Not recommended for non top-supported installations (such as fences or unbraced carports) Nominal post size: 6x6 Made with 12-gauge base plate; 1-1/16 in. OD x 8 in. pipe Hot-dip galvanization (HDG) offers extra corrosion resistance for exterior and treated-wood applications Specifications MPN: EPB66HDG Member Size: 6x6 Coating: Hot-Dip Galvanized Finish: Hot-Dip Galvanized Base Plate Gauge: 12 Pipe: 1-1/16 in. OD x 8 in. Install With: 0.162 in. x 3-1/2 in. nails Country of Origin: United States Approved Applications Decks and patio covers requiring secure post-to-concrete connections Exterior applications where corrosion resistance is required Installations using treated wood where hot-dip galvanization is necessary Cast-in-place concrete installations requiring a code-compliant elevated standoff Downloads and Resources View Specifications Frequently Asked Questions What is the standoff range this post base provides? When properly installed, the EPB66HDG provides the code-required 1 in. standoff above the concrete surface and allows up to 2-1/2 in. of standoff if a greater clearance is desired for your application. How is this post base installed? The EPB66HDG is a cast-in-place base, meaning it is set into wet concrete during the pour. It should be installed with 0.162 in. x 3-1/2 in. nails to secure the post to the base plate. Is this post base suitable for fences or unbraced carports? No. The EPB66HDG is not recommended for non top-supported installations such as fences or unbraced carports. It is designed for applications where the top of the post is supported, such as decks and patio covers. Why is hot-dip galvanization important for this post base? Hot-dip galvanization (HDG) provides an extra layer of corrosion resistance, making the EPB66HDG well suited for exterior environments and applications involving treated wood, where standard coatings may not hold up over time. Note: Product dimensions and/or screw or bolt holes may differ from picture. Please see item description for specifications.