The Simpson EPB44HDGMB EPB Hot-Dip Galvanized Elevated Post Base for 4x4 is a cast-in-place post and column base engineered by Simpson to secure the bottom of 4x4 posts or columns directly to concrete - making it a reliable choice for decks, patio covers, pergolas, and other top-supported outdoor structures. Built from a 12-gauge base plate with a 1-1/16 in. OD x 8 in. pipe, this elevated post base delivers the code-required 1 in. standoff above the concrete surface to help prevent moisture-related rot at the post end, while offering the flexibility to extend that clearance up to 2-1/2 in. to suit a range of installation conditions.

Key Features

• Adjustable standoff range (1 in. to 2-1/2 in. above concrete) - lets installers dial in the exact clearance needed for varying site conditions and application requirements, not just the code minimum.
• Cast-in-place installation in wet concrete - allows the base to be set during the pour for a secure, permanent connection without the need for anchor bolts or drilling into hardened concrete.
• Code-required 1 in. standoff when properly installed - keeps the post end clear of standing moisture, helping to prevent wood rot and extend the service life of the structure.
• Hot-dip galvanized finish - provides extra corrosion resistance specifically suited for exterior environments and direct contact with pressure-treated lumber, where standard coatings can break down prematurely.
• 12-gauge base plate construction with 1-1/16 in. OD x 8 in. pipe - delivers the structural strength needed for load-bearing post connections on decks and covered patio structures.
• Installs with 0.162 in. x 3-1/2 in. nails or #10 x 1-1/2 in. Strong-Drive SD screws - compatible with common fastener types, keeping installation straightforward without specialty hardware.
• Not recommended for non top-supported installations such as fences or unbraced carports - knowing the intended scope upfront helps buyers confirm the right fit before installation and avoid costly errors.
• 50 bases per package - sized for project-scale purchasing, reducing per-unit cost and minimizing reorder trips on larger deck or patio builds.

Why This Product

• Built-in rot protection that meets code - the cast-in-place design delivers the mandated 1 in. clearance between the post end and concrete surface automatically when installed correctly, taking the guesswork out of compliance on permitted deck and patio cover projects.
• Hot-dip galvanization for long-term outdoor performance - unlike lighter coatings, the HDG finish is engineered to hold up against moisture, weather exposure, and the corrosive chemistry of pressure-treated lumber, making this base a dependable choice for exterior structural connections.
• Standoff flexibility beyond the code minimum - the ability to extend clearance up to 2-1/2 in. above the concrete surface gives contractors and builders the adaptability to address site-specific drainage or grading conditions without switching to a different product.
• American-made construction in a contractor-friendly quantity - produced in the United States and packaged at 50 units per carton, this post base is well suited for multi-post deck builds and patio cover installations where consistency, quality, and job-site efficiency all matter.

Specifications

• MPN: EPB44HDGMB
• Member Size: 4x4
• Coating: Hot-Dip Galvanized
• Finish: Hot-Dip Galvanized
• Base Plate Gauge: 12
• Pipe Dimensions: 1-1/16 in. OD x 8 in.
• Width (W): 3-9/16 in.
• Height (H): 2-5/16 in.
• Length (L): 3-1/4 in.
• Install With: 0.162 in. x 3-1/2 in. nails or #10 x 1-1/2 in. Strong-Drive SD screws
• Fasteners Required: (8) 0.162 in. x 3-1/2 in. nails
• Standoff Range: 1 in. (code-required minimum) to 2-1/2 in. above concrete
• Package Quantity: 50
• Country of Origin: United States

Approved Applications

• Decks requiring code-compliant elevated post bases
• Patio covers and pergolas with top-supported post installations
• Exterior structural posts set into wet concrete
• Treated-wood post installations requiring corrosion-resistant hardware

Options

• Contact us for Configurable Options and Special orders

Frequently Asked Questions

What standoff clearance does the EPB44HDGMB provide above the concrete surface?

When properly installed, this post base provides the code-required 1 in. standoff above the concrete. The adjustable design also allows up to 2-1/2 in. of standoff above concrete if a greater clearance is desired for your application.

Can the EPB44HDGMB be used with pressure-treated lumber in exterior applications?

Yes. The hot-dip galvanized (HDG) finish is specifically designed to offer extra corrosion resistance for exterior and treated-wood applications, making it well suited for use with pressure-treated lumber in outdoor environments.

Is this post base suitable for fences or unbraced carports?

No. This product is not recommended for non top-supported installations such as fences or unbraced carports. It is intended for use in applications where the post or column is top-supported, such as decks and patio covers.

What fasteners are required to install the EPB44HDGMB?

Installation requires (8) 0.162 in. x 3-1/2 in. nails, or the base can be installed using #10 x 1-1/2 in. Strong-Drive SD screws. The base itself is cast in place into wet concrete.

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