4 Pcs 4x4 Concealed Post Base, Heavy Duty Knife Plate Bracket — Open-Box, 34% Off

Applicable post size: 3-1/2" x 3-1/2", Nominal size: 4x4 post, Thickness: 6 Gauge

Prepunched hole size: for 3/8" bolt

Low Carbon steel

Used for wood roof truss, timber connectors, glulam beam to column connection,which is suitable for many scenes such as home, garden, patio,etc

Package list: 4Pcs 4x4 Concealed Post Base

This 4x4 concrete anchor base is a seamless, code-compliant fastening solution featuring a hidden design and a 1-inch clearance for post protection. It reduces end decay of timber posts and adheres to building code requirements for exterior, splash-prone, or below-grade applications—ideal for skilled carpenters aiming for a streamlined appearance. Fabricated from galvanized steel—including the knife plate, washers, and standoff base—and finished with a textured flat black powder coating, it offers improved corrosion resistance for durability over time. Load-tested and certified to withstand uplift, downward, and lateral forces, it includes all necessary mounting components for expedited installation, suitable for 4x4 nominal framing members. Compatible with cast-in-place embeds or retrofit applications using adhesive or mechanical anchors, it provides a secure and reliable connection. Suitable for decks, pergolas, and other exterior structures, it establishes a strong and enduring foundation.