The Simpson PB46 4x6 Galvanized Post Base is a 12-gauge steel connector engineered to create a reliable, flush-mounted connection between a 4x6 post or column and a concrete foundation. Designed by Simpson for decks, patio covers, and other top-supported structures, this post base embeds directly into wet concrete after the pour, delivering a clean and corrosion-resistant anchor point that is built to handle the demands of outdoor structural applications.

Key Features

• Embeds in wet concrete after pour and is made to install flush with the concrete surface - allows for a clean, professional finish at the base of posts and columns without raised hardware interrupting the installation.
• Embossment in the seat of the base gives increased strength - the formed embossment adds structural rigidity to the seat, improving load-bearing performance at the critical post-to-base connection point.
• Stress relief holes under the base resist tearing during loading - helps the base manage real-world forces and movement, reducing the risk of material failure under load over time.
• Made from 12-gauge steel - provides a heavy-duty foundation connector capable of handling the demands of deck posts, patio cover columns, and similar top-supported structural applications.
• Galvanized (G90) for extra corrosion resistance - the G90 zinc galvanized coating protects against rust and corrosion, making this post base well suited for outdoor environments and use with treated lumber.
• Installs with 16d common nails - works with a widely available fastener type, keeping the installation process straightforward for builders and contractors.

Why This Product

• Flush concrete installation with no compromise on strength - because the base is designed to embed flush with the concrete surface after the pour, you get a clean, unobtrusive post connection without sacrificing the structural integrity needed for decks and patio cover framing.
• Built-in design details do the heavy lifting - the combination of a reinforced embossed seat and stress relief holes means the connector is engineered to handle real loading conditions, not just static weight, giving you a more dependable post base for long-term outdoor use.
• G90 galvanized coating for lasting outdoor performance - the zinc galvanized finish provides a meaningful layer of corrosion protection, making this post base a practical choice for exterior structural connections exposed to moisture and treated wood.
• Made for the right application - specifically designed for top-supported structures like decks and patio covers, this post base is purpose-built for the connection type where it performs best, so you are selecting a connector matched to your actual project needs.

Specifications

• MPN: PB46
• Member Size: 4x6
• Gauge: 12
• Coating: Zinc Galvanized, G90
• Finish: Zinc Galvanized, G90
• Install With: 16d common nails (sold separately)
• Width: 5-1/2 in.
• Length: 3-1/4 in.
• Country of Origin: United States

Approved Applications

• Deck post-to-concrete connections
• Patio cover post or column bases
• Other top-supported structural post installations

Frequently Asked Questions

What size post is the PB46 designed for?

The PB46 is designed for a nominal 4x6 post or column size.

How is the PB46 installed in concrete?

The PB46 embeds in wet concrete after the pour and is made to install flush with the concrete surface. It is installed with 16d common nails to secure the post to the base.

What type of corrosion protection does the PB46 have?

The PB46 features a G90 zinc galvanized coating, providing extra corrosion resistance that makes it well suited for outdoor and treated-wood applications.

Is the PB46 suitable for use in fences or unbraced carports?

No. Post bases in the PB series do not provide adequate resistance to prevent members from rotating about the base and are therefore not recommended for non-top-supported installations such as fences or unbraced carports. They are intended for decks, patio covers, and other top-supported structures.

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