6x6 Post Base Anchors, 10 Pack, 1-Inch Standoff

6x6 post base anchors your wood posts to concrete for a steadier pergola, patio cover, or porch railing. This 10-pack fits common 5.5 x 5.5 in and 5.5 x 6 in posts, with U-shaped positioning holes to help fine-tune alignment during install. Zinc-plated carbon steel construction resists rust, while the 1-inch standoff improves drainage to help protect post ends from dampness.

• Fits 5.5 x 5.5 in and 5.5 x 6 in wood posts with a snug inner tube size for stable support.


• Delivers long-lasting strength with 1.2 mm carbon steel and a zinc-plated finish for corrosion resistance.


• Allows quick alignment using U-shaped positioning holes for small adjustments while leveling posts.


• Protects wood by elevating the post 1 inch to promote airflow, drainage, and reduced moisture contact.


• Supports builds like pergolas, patio structures, porch railings, and column supports on concrete surfaces.

Set your posts with confidence and keep your project moving. These concrete post anchors are designed for clean, consistent installs and dependable holding power where it matters most—at the base. Use them for new builds or replacements to improve stability and help extend the service life of your outdoor structures. Grab yours today and start framing with hardware built for real-world weather and load demands.

• Quantity: 10 pcs


• External dimensions: 5.68 x 5.57 in (144.5 x 141.5 mm)


• Internal dimensions: 5.49 x 5.57 in (139.5 x 141.5 mm)


• Overall product size: 5.69 x 5.57 x 3.18 in (144.6 x 141.5 x 80.7 mm)


• Base-to-timber clearance (standoff): 1 in (25.4 mm)


• Wall thickness: 1.2 mm


• Material: zinc-plated carbon steel


• Positioning holes: U-shaped


• Net weight (set): 10.58 lb (4.8 kg)