Description
The EONECROSS 4×6 post base creates a sturdy connection between a wood post and a concrete surface. Made from 2mm-thick steel, this heavy-duty bracket fits nominal 4×6 wood posts with actual dimensions of 3.5″ x 5.5″.
The 1-inch ground standoff keeps the bottom of the post elevated above the mounting surface. As a result, it helps limit direct contact with moisture and standing water. This design makes the bracket a practical choice for suitable pergolas, decks, patios, gazebos, porches, and other outdoor projects.
4×6 Post Base for Concrete
This 4×6 post base for concrete provides a practical mounting point for compatible wood posts.
The heavy-duty steel structure connects the post to a suitable concrete surface. In addition, the mounting holes work with the included expansion anchors and self-tapping screws.
The adjustable design also helps you position the post during installation. Once the bracket is properly installed and tightened, it helps support the post at its base.
Before installation, check the condition of the concrete and confirm that the supplied hardware suits your project.
Fits 3.5″ x 5.5″ Wood Posts
A nominal 4×6 wood post commonly measures approximately 3.5″ x 5.5″ after milling.
This 4×6 wood post base is designed to fit that actual post dimension. However, lumber sizes can vary between suppliers. Therefore, measure your actual post before ordering.
The bracket works well for suitable outdoor projects that use compatible 4×6 wood posts, including:
- Pergolas
- Decks
- Patios
- Gazebos
- Porches
- Outdoor woodworking projects
For the best fit, make sure your actual post dimensions match the bracket opening. If you need a different size, compare our 4×4 post base for concrete or 6×6 post base for concrete for larger nominal wood posts.
Heavy-Duty 2mm Steel Construction
We use 2mm-thick steel to build this 4×6 post bracket.
The steel construction provides a solid mounting structure for compatible wood posts and concrete surfaces. Meanwhile, the bracket’s sturdy design makes it suitable for a range of outdoor woodworking projects.
This 4×6 post anchor provides a practical mounting point while keeping the bottom of the wood post elevated above the concrete.
For structural applications, always select appropriate lumber, anchors, fasteners, and installation methods for your specific project.
1-Inch Ground Standoff
The bracket raises the bottom of the wood post approximately 1 inch above the mounting surface.
This elevated design helps reduce direct contact between the wood and concrete. As a result, it can help limit moisture exposure around the bottom of the post.
The raised connection also provides clearance underneath the wood post. However, proper drainage, suitable materials, and correct installation remain important for outdoor projects.
Silver Galvanized Finish
The 4×6 post base features a silver galvanized finish that gives the bracket a clean, understated appearance.
The surface treatment is intended to help protect the steel against corrosion during normal use. Actual corrosion resistance depends on the coating process, weather exposure, moisture levels, and maintenance.
Before describing this product as galvanized, E-coated, or a combination of both, confirm the exact finish specifications for the product you sell. Regularly inspect the hardware and keep the mounting area clean and properly drained.
Adjustable Design for Easier Positioning
The adjustable design helps make post positioning easier during installation.
First, position the bracket on the prepared concrete surface. Next, place the wood post inside the bracket. Then, adjust the post position as needed before tightening the hardware.
This design can make it easier to fine-tune alignment during installation. For best results, follow the included instructions and confirm that the post sits correctly inside the bracket.
4×6 Pergola Post Base Applications
This 4×6 pergola post base suits a range of outdoor woodworking projects that use compatible 4×6 posts.
Pergolas
Use the bracket for suitable pergola projects where compatible wood posts connect to concrete surfaces.
Decks
The elevated design helps keep the bottom of the post above the concrete mounting surface.
Patios and Gazebos
The bracket can also work for suitable patio covers, gazebos, and similar outdoor structures.
Porches
For porch projects, measure the actual wood post dimensions and confirm the required mounting method before installation.
If your project uses different post dimensions, compare the available sizes in our post base range. You can also explore our pergola brackets for additional connection hardware for suitable outdoor woodworking projects.
Easy Installation
The 4×6 post base bracket includes expansion anchors and self-tapping screws to help simplify installation.
A typical installation process includes:
- Measure the actual wood post.
- Position the post base on a suitable concrete surface.
- Mark the mounting hole locations.
- Drill the concrete according to the anchor manufacturer’s requirements.
- Clean the drilled holes as instructed.
- Install the expansion anchors.
- Secure the bracket to the concrete.
- Place the 3.5″ x 5.5″ wood post into the bracket.
- Check the post position and tighten the hardware.
Before installation, read the included instructions and confirm that the supplied hardware matches your concrete type and project conditions. For load-bearing structures, make sure the bracket and anchors are suitable for the expected loads and applicable building requirements.
What’s Included
Each package includes:
- 10 × 4×6 Post Bases
- Expansion anchors
- Self-tapping screws
- Installation instructions
The 10-pack provides multiple post bases for projects that require several compatible wood-post mounting points.
However, your specific project may require additional tools or fasteners depending on the concrete, lumber, and installation method.
4×6 Post Base Specifications
| Specification | Details |
|---|---|
| Product Type | 4×6 Post Base |
| Application | Concrete mounting |
| Nominal Post Size | 4×6 |
| Actual Post Size | 3.5″ x 5.5″ |
| Material | Steel |
| Steel Thickness | 2mm |
| Ground Standoff | 1 inch |
| Finish | Silver Galvanized |
| Quantity | 10 PCS |
| Design | Adjustable |
| Suitable Applications | Pergolas, decks, patios, gazebos, porches |
| Included Hardware | Expansion anchors and self-tapping screws |
Why Choose This 4×6 Post Base?
Heavy-Duty 2mm Steel
The 2mm steel construction provides a sturdy mounting structure for suitable outdoor projects.
Fits Actual 3.5″ x 5.5″ Posts
The bracket accommodates nominal 4×6 wood posts with actual dimensions of approximately 3.5″ x 5.5″.
1-Inch Standoff
The elevated design helps keep the bottom of the wood post away from direct contact with the concrete surface.
Adjustable Design
The adjustable structure helps make post positioning easier during installation.
Silver Finish
The silver finish provides a clean appearance for outdoor projects. Check the product specifications for the exact surface treatment and corrosion-resistance details.
Multiple Applications
Use the bracket for suitable pergolas, decks, patios, gazebos, porches, and similar outdoor projects.
Hardware Included
The package includes 10 post bases, expansion anchors, self-tapping screws, and installation instructions, giving you a convenient starting point for projects with multiple posts.

FAQ
Q: What size wood post fits this 4×6 post base?
A: It is designed for nominal 4×6 lumber with actual dimensions of approximately 3.5″ x 5.5″. Measure your post before ordering to confirm compatibility.
Q: Can I install this post base on concrete?
A: Yes, it is designed for concrete mounting with the appropriate expansion anchors. The concrete condition, anchor specifications, and installation method must suit your application.
Q: How high does the base raise the wood post?
A: The design provides a 1-inch standoff between the bottom of the post and the mounting surface.
Q: What material is the bracket made from?
A: Each bracket is made from 2mm-thick steel.
Q: How many post bases are included?
A: This package contains 10 post bases, along with the listed expansion anchors, self-tapping screws, and instruction manual.
Q: Can I use these brackets for a pergola?
A: They can be considered for compatible deck, gazebo, patio, and porch projects. Suitability depends on the structure’s design, expected loads, and applicable building requirements.
Q: Do I need to drill into the concrete?
A: Concrete mounting generally requires drilling holes for compatible expansion anchors. Follow the included installation instructions and the anchor manufacturer’s requirements.
Q: Does the 1-inch standoff prevent wood rot?
A: The standoff helps keep the post end elevated above the concrete surface, which can reduce direct contact with moisture. It does not guarantee that wood rot will be prevented.
Q: Are these post bases suitable for every structural application?
A: No. Choose the bracket and anchors based on the project’s loads, concrete conditions, and local building codes. For structural applications, obtain professional guidance when needed.
For damaged or leaning wood fence posts, see our fence post repair kit for another practical post-support solution.




















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