12×12 Post Base for Concrete Heavy Duty Adjustable Post Bracket with 1″ Standoff

The EONECROSS 12×12 post base provides a sturdy connection between large wood posts and concrete surfaces. The 2mm thick steel construction gives this heavy-duty post base a sturdy connection. fits posts with an actual size of 11.5″ x 11.5″. A 1″ ground standoff helps keep the wood above the concrete surface, making it a practical choice for pergolas, decks, patios, gazebos, and porches.

12×12 Post Base for Concrete

This 12×12 post bracket works well for projects that use large wood posts on concrete surfaces. The steel base helps keep the post positioned in place while providing a solid connection between the wood post and the mounting surface.

The inner opening measures 11.5″ x 11.5″, which matches the actual dimensions of many nominal 12×12 wood posts.

Fits 11.5″ x 11.5″ Wood Posts

A nominal 12×12 wood post does not usually measure a full 12″ x 12″. Therefore, this 12×12 post bracket has an actual inner size of 11.5″ x 11.5″.

Before installation, measure your post to confirm that the actual dimensions match the base opening.

If your project uses a smaller wood post, our 6×6 post base is another option for common post-to-concrete applications.

Heavy-Duty 2mm Steel Construction

Built from 2mm thick steel, this 12×12 post bracket is made for demanding outdoor projects. The solid steel construction provides a sturdy mounting point for large wood posts.

The base is suitable for applications such as pergolas, decks, patios, gazebos, and porches where a raised post connection is needed.

1-Inch Ground Standoff

The elevated post bracket keeps the bottom of the wood post about 1″ above the ground or concrete surface.

Raising the wood slightly above the mounting surface helps limit direct contact with moisture and makes it easier to keep the bottom of the post away from standing water.

E-Coated Finish for Outdoor Use

In addition, the steel surface features a silver e-coating and galvanized protection for improved resistance to outdoor exposure. This finish helps protect the 12×12 post anchor from corrosion during normal outdoor use.

12×12 Pergola Post Base Applications

Pergolas

Use this 12×12 pergola post base to connect large wood posts to concrete surfaces when building a pergola. For pergola projects, you can also use 4×4 pergola brackets for other post and beam connection needs.

Decks

The elevated design can also be used as a 12×12 deck post base for suitable deck projects.

Patios and Gazebos

In addition, you can use the post base for patio covers, gazebos, and similar outdoor structures.

Porches

The base can also be used for suitable porch projects that require a post-to-concrete connection.

Adjustable Level Design for Easier Installation

The adjustable level design gives you some flexibility when positioning the post base during installation. It can make leveling easier when setting up the post and mounting hardware.

The package includes all hardware needed for the installation shown in the instructions.

What’s Included

• 1 × 12×12 post base
• Expansion anchors
• Self-tapping screws
• Installation instructions

12×12 Post Base Specifications

Specification	Details
Product Type	12×12 Post Base
Quantity	1 PCS
Nominal Post Size	12×12
Actual Inner Size	11.5″ × 11.5″
Material	Steel
Steel Thickness	2mm
Mounting Surface	Concrete
Ground Standoff	1″
Finish	Silver E-Coated*
Application	Pergola, Deck, Patio, Gazebo, Porch
Hardware	Included

Why Choose This Post-to-Concrete Bracket?

Fits Large Wood Posts

Fits nominal 12×12 posts with an actual 11.5″ x 11.5″ opening.

Heavy-Duty Steel

We use 2mm thick steel to provide a sturdy post connection.

1″ Ground Standoff

Raises the wood post above the mounting surface.

Adjustable Level Design

Helps make positioning and leveling easier during installation.

Hardware Included

Expansion anchors, self-tapping screws, and instructions are included.

FAQ

Q: What size post does a 12×12 post base fit?

A: This 12×12 post base has an actual inner size of 11.5″ x 11.5″ and fits nominal 12×12 wood posts. However, wood posts can vary slightly in actual dimensions, so always measure your post before installation.

Q: Can I install a 12×12 post base on concrete?

A: Yes. This 12×12 post base for concrete connects a wood post to a concrete surface using the included expansion anchors and self-tapping screws. Before installation, make sure the post, fasteners, and concrete surface meet the requirements of your project.

Q: What is the actual size of a 12×12 wood post?

A: A nominal 12×12 wood post typically measures less than 12″ x 12″ in actual dimensions. For this reason, this post base has an actual inner opening of 11.5″ x 11.5″ to fit common nominal 12×12 wood posts. Always measure the actual post size before installation.

Q: Can I use this 12×12 post base for a pergola?

A: Yes. This 12×12 pergola post base can be used for suitable pergola projects where large wood posts need to connect to concrete.

Q: Does the 12×12 post base come with hardware?

A: Yes. This 12×12 pergola post base can work for suitable pergola projects where large wood posts connect to concrete. In addition, the 1″ ground standoff keeps the bottom of the wood post above the mounting surface.

Q: Is this post base suitable for decks?

A: It can be used for suitable deck projects that require a raised wood-post-to-concrete connection. Check your local building requirements and confirm the post, fastener, and concrete specifications before installation.

 

For damaged or leaning fence posts, our fence post repair kit provides another option for reinforcing existing wood posts.