The Simpson ABW66Z Adjustable Standoff Post Base is a galvanized post anchor engineered by Simpson to securely connect a 6x6 post or column to existing hardened concrete. Built for decks, patio covers, pergolas, and other top-supported structures, this post base combines adjustability, rot protection, and enhanced corrosion resistance into a single solution designed for demanding exterior and treated-wood applications.

Key Features

• Attaches a post to existing concrete for decks, patio covers, and other top-supported structures - gives you a reliable, code-suitable anchoring point without the need to pour new concrete around the base.
• 1-in. standoff above the concrete surface - elevates the post end away from moisture, directly reducing the risk of rot and extending the service life of the post.
• Slotted design for adjustability - allows movement around the anchor bolt during installation so you can achieve optimum post placement even when anchor bolt position is not perfectly centered.
• Designed for versatility, cost-effectiveness, and maximum uplift performance - handles the wind uplift demands of open structures like pergolas and patio covers without requiring a more complex or expensive anchoring system.
• ZMAX galvanization - provides an enhanced level of corrosion resistance compared to standard galvanized finishes, making this base well-suited for exterior use and direct contact with treated lumber where moisture and chemical exposure are ongoing concerns.
• Base gauge 12, strap gauge 14 steel construction - delivers the structural thickness needed to meet the load and uplift requirements of a full-size 6x6 post application.
• Installs with 10d common nails or Strong-Drive SD screws - works with widely available fastener types, keeping installation straightforward for contractors and experienced DIYers alike.

Why This Product

• Built-in rot protection where it matters most - the 1-in. standoff keeps the post end clear of the concrete surface, addressing one of the most common causes of long-term post failure in outdoor structures.
• ZMAX coating adds durability in tough environments - for projects involving treated lumber or prolonged exterior exposure, the enhanced galvanization provides a meaningful step up in corrosion resistance over standard coatings, helping the hardware last as long as the structure it supports.
• Adjustable design reduces installation headaches - the slotted base accommodates minor anchor bolt variations in the field, giving you flexibility to set posts accurately without having to relocate hardware or re-drill concrete.
• Purpose-built for wind uplift performance on open structures - engineered specifically to deliver maximum uplift resistance, this post base is a dependable choice for decks, patio covers, and pergolas where lateral and uplift forces are primary design concerns.

Specifications

• Model Number: ABW66Z
• Nominal Post Size: 6x6
• Steel Gauge: Base 12; strap 14
• Width: 5-1/2 in.
• Height: 3 in.
• Length: 5-9/16 in.
• Coating/Finish: ZMAX
• Install With: 10d common nails or #9 x 1-1/2 in. Strong-Drive SD screws (sold separately)
• Country of Origin: United States

Approved Applications

• Decks and deck framing connections
• Patio covers and pergola post anchoring
• Other top-supported structures requiring post-to-concrete attachment
• Exterior applications with treated-wood where corrosion resistance is required

Frequently Asked Questions

What size post is the ABW66Z designed for?

The ABW66Z is designed for a nominal 6x6 post or column size.

Why does the ABW66Z feature a 1-inch standoff?

The 1-in. standoff elevates the base of the post above the concrete surface, helping to prevent moisture contact at the post end and reducing the risk of rot over time.

What fasteners should be used to install the ABW66Z?

The ABW66Z is approved for installation with 10d common nails or #9 x 1-1/2 in. Strong-Drive SD screws. Because of its ZMAX G185 galvanized finish, hot-dip galvanized fasteners meeting ASTM A153 specifications are required.

What makes the ZMAX coating on the ABW66Z beneficial?

ZMAX galvanization provides an enhanced level of corrosion resistance compared to standard galvanized finishes, making the ABW66Z well-suited for exterior applications and use with treated lumber where moisture and chemical exposure are concerns.

Note: Product dimensions and/or nail or screw holes may differ from picture. Please see item description for specifications.