The Simpson EPB44-12HDG EPB Hot-Dip Galvanized Elevated Post Base for 4x4 with 12 in. Pipe is a cast-in-place post and column base from Simpson engineered to secure the bottom of 4x4 posts or columns to concrete - built for decks, patio covers, and other top-supported outdoor structures where a reliable, rot-resistant connection is essential. The hot-dip galvanized finish delivers extra corrosion resistance suited to exterior environments and pressure-treated wood applications, while the adjustable elevated standoff design meets code requirements and helps protect post ends from moisture-related decay.

Key Features

• Installs in wet concrete - lets you set the base during your concrete pour for a fully integrated, cast-in-place connection without extra steps after curing.
• Provides the code-required 1 in. standoff when properly installed; allows up to 2-1/2 in. of standoff above concrete (if desired) - keeps post ends clear of standing water and direct concrete contact, helping prevent rot and keeping your installation compliant.
• Added standoff adjustability to suit a variety of applications - gives you flexibility to dial in the exact clearance your project needs, from the minimum code requirement up to 2-1/2 in.
• Hot-dip galvanization offers extra corrosion resistance for exterior and treated-wood applications - makes this base a dependable choice for outdoor decks, patio covers, and any structure where the hardware is exposed to moisture or in contact with treated lumber.
• 12-gauge base plate with 1-1/16 in. OD x 12 in. pipe construction - provides a sturdy, purpose-built foundation for 4x4 nominal posts, combining structural integrity with consistent dimensional fit.
• Not recommended for non top-supported installations (such as fences or unbraced carports) - knowing the right application upfront saves time and ensures your structural design stays safe and code-appropriate.

Why This Product

• Built-in rot protection that meets code - the elevated standoff design is not just a convenience feature; it fulfills the code-required 1 in. clearance above concrete, reducing the risk of post-end rot and giving you one less compliance concern on the job.
• HDG finish engineered for harsh outdoor conditions - hot-dip galvanization goes beyond standard zinc coatings, making this post base a natural fit for coastal-adjacent, high-moisture, or treated-wood environments where ordinary hardware degrades prematurely.
• Adjustable standoff adds real on-site flexibility - with a usable range from 1 in. up to 2-1/2 in. above concrete, this base accommodates varying site conditions and finish grades without requiring specialty hardware or custom fabrication.
• Straightforward wet-concrete installation - designed to be set directly into wet concrete and fastened with 0.162 in. x 3-1/2 in. nails or #10 x 1-1/2 in. Strong-Drive SD screws, this base integrates cleanly into standard deck and patio cover workflows without complicated anchoring procedures.

Specifications

• Model Number (MPN): EPB44-12HDG
• Member Size: 4x4
• Gauge: Base plate 12
• Pipe: 1-1/16 in. OD x 12 in.
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Standoff Range: 1 in. (code-required minimum) to 2-1/2 in. above concrete
• Install With: 0.162 in. x 3-1/2 in. nails or #10 x 1-1/2 in. Strong-Drive SD screws
• Country of Origin: United States

Approved Applications

• Decks and patio covers requiring cast-in-place post bases
• Top-supported post and column installations set into wet concrete
• Exterior applications and structures using treated wood where corrosion resistance is required

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What is the standoff range this post base provides above concrete?

When properly installed, this post base provides the code-required 1 in. standoff above concrete. It can also be adjusted to allow up to 2-1/2 in. of standoff above concrete if desired, offering flexibility for a variety of applications.

Why is a standoff important for post installations?

The elevated standoff helps prevent rot at the post end by keeping the base of the post clear of standing water and direct contact with concrete, which is a code-required feature for many structural installations.

Is the EPB44-12HDG suitable for fence or unbraced carport installations?

No. This post base is not recommended for non top-supported installations such as fences or unbraced carports. It is designed for top-supported structures like decks and patio covers.

What fasteners are used to install the EPB44-12HDG?

Install with 0.162 in. x 3-1/2 in. nails or #10 x 1-1/2 in. Strong-Drive SD screws. The base is cast in place into wet concrete during installation.

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