The Simpson APB44 Ornamental 4x4 Post Base is a black powder-coated structural connector from Simpson designed to anchor 4x4 posts and columns securely to concrete surfaces. Built for outdoor living projects including pergolas, patio covers, and other top-supported structures, this post base pairs reliable load-bearing performance with decorative mission-style accents that complement finished outdoor spaces. A ZMAX galvanized base with a black powder-coat finish provides layered corrosion protection suited for exterior conditions and treated-wood contact, while a built-in 1 in. standoff keeps post ends elevated above the concrete surface to reduce moisture-related deterioration over time.

Key Features

• Meets stringent building codes for seismic or high-wind events - gives you confidence the connection will perform where structural loads and local code compliance matter most.
• Slotted design for adjustability - allows for minor positional corrections during installation, reducing the need to repour or relocate anchors.
• 1 in. standoff from the concrete surface - elevates the post end to minimize direct moisture contact, helping protect against rot at the base of the post over time.
• Slightly offset fastener holes - reduces the chance of fastener-to-fastener interference during installation, keeping fasteners sold separately seated cleanly and securely.
• ZMAX galvanization with a black powder coat - combines two layers of corrosion resistance for dependable long-term durability in exterior and treated-wood applications.
• 16 ga. base plate and 12 ga. straps - heavier strap gauge at the connection points adds strength where the structural load transfer is most concentrated.
• Install with (4) STN22 hex-head washers and (4) SDWS22312DBB structural wood screws - pairing with matched Outdoor Accents hardware keeps the finished installation visually consistent and structurally coordinated (fasteners sold separately).
• Compatible with Outdoor Accents side plates (APBDSP) - optional decorative side plates let you refine the appearance of the post base to suit the overall design of your outdoor structure.

Why This Product

• Structural performance meets decorative design - unlike plain utility hardware, the APB44 is purpose-built for visible outdoor installations, offering the load-rated reliability required by code alongside ornamental detailing that suits pergolas, patio covers, and similar finished structures.
• Two-layer corrosion protection for long-term exterior use - ZMAX galvanization combined with a black powder-coat finish addresses the dual threats of moisture and treated-wood chemical exposure, making this post base a durable choice for outdoor concrete-to-post connections that need to last.
• Built-in rot prevention at the post base - the 1 in. concrete standoff is a practical, engineered detail that helps protect your posts from the ground-level moisture accumulation that shortens the life of wood posts in outdoor applications.
• Designed for high-demand conditions - with approval for seismic and high-wind applications, the APB44 is a suitable anchor solution for regions where local building codes impose stricter connection requirements for outdoor structural projects.

Specifications

• MPN: APB44
• Member Size: 4x4
• Finish: ZMAX Galvanized with Black Powder Coat
• Coating: ZMAX
• Gauge: Base 16 ga., strap 12 ga.
• Width: 3 9/16 in.
• Length: 3 in.
• Height: 7 in.
• Country of Origin: United States

Approved Applications

• Pergolas
• Patio covers
• Top-supported outdoor structures
• Exterior and treated-wood applications

Related Products

• SDWS22312DBB Screws - recommended structural wood screws for installation
• STN22 Washers - Outdoor Accents hex-head washers for installation
• Concrete Anchors - 5/8 in. concrete anchors required for installation
• - optional Outdoor Accents side plates
• Simpson Strong-Tie Outdoor Accents Collection - browse the complete collection

Frequently Asked Questions

What post size is the APB44 designed for?

The APB44 is designed for a nominal 4x4 post size, securing the post or column directly to a concrete surface.

Why does the APB44 include a 1 in. standoff?

The 1 in. standoff keeps the base of the post elevated above the concrete surface, helping to prevent moisture accumulation at the post end that could lead to rot over time.

What fasteners are required to install the APB44?

Installation requires (4) STN22 Outdoor Accents hex-head washers, (4) SDWS22312DBB Outdoor Accents structural wood screws, and a 5/8 in. concrete anchor. Fasteners are sold separately.

Is the APB44 suitable for high-wind or seismic conditions?

Yes. The APB44 is designed to meet stringent building codes for seismic or high-wind events, making it appropriate for structurally demanding outdoor applications such as pergolas and patio covers.