AXWHYS 4x4 Post Base Kit – 8 Pcs, Inner 3.6x3.6, Heavy-Duty Black Steel Outdoor Brackets for Decks, Pergolas & Fences

Overview

Meet the AXWHYS 4x4 Post Base Kit — a robust outdoor mounting solution designed to help you build stable, cleanly finished supports for decks, pergolas, fences, and boundary posts. Crafted from solid steel and finished with a premium black powder coating, this base is built to resist rust and withstand outdoor conditions while maintaining a neat, professional look.

Key specifications

The 4x4 post base is designed for standard 4x4 posts with an inner opening of 3.6 by 3.6 inches. At 5.5 inches high, it provides a substantial anchor point that remains firmly attached to ground or floor, suitable for both wooden and concrete installations.

Footprint and design details

Designed with a compact footprint, this base fits neatly into small base areas, making it ideal for tight spots and tight budgets of space. It works well for backyard gazebos, deck supports, porch railings, handrails, and mailbox post mounts.

Notable design features

• Solid steel construction with a black premium powder coat for weather resistance.
• Fits standard 4x4 posts (inner 3.6x3.6 in); 5.5 inches tall for solid grounding on wood or concrete.
• Compact footprint designed for small base areas and tidy installations.
• Bottom partition keeps wood away from ground moisture; a central stabilizing box adds rigidity.
• Includes practical hardware design for ready mounting on multiple surfaces.

What’s included

• Wrench for installation and adjustments
• 32 expansion anchors for concrete floors
• 32 socket head wood screws for wood floors
• 64 Phillips head self-tapping screws for 4x4 post fixation

Applications range from decorative gazebos to functional fence lines. The combination of a compact footprint and a robust steel build supports a neat, lasting installation. For outdoor projects where a clean, sturdy post mounting matters, the AXWHYS post base offers a practical solution that aligns with common 4x4 post systems. Always follow local building codes and ensure proper anchoring for your specific surface.