The Simpson APB44R Ornamental Rough Cut 4x4 Post Base is part of the Simpson Outdoor Accents Mission Collection, engineered to anchor a rough 4x4 post or column securely to concrete for exterior structures including pergolas, patio covers, and other top-supported builds. Its ZMAX galvanized steel construction with a black powder-coat finish delivers layered corrosion resistance purpose-built for outdoor and treated-wood environments, while its decorative profile adds a finished, architectural look to structural connections.

Key Features

• ZMAX galvanization with black powder coat - provides dual-layer corrosion protection, making this base well-suited for exterior applications and direct contact with treated wood without premature degradation.
• 1 in. standoff from concrete surface - keeps the post end elevated above the base, allowing moisture to drain and air to circulate so post-end rot is significantly reduced over the life of the structure.
• Designed to meet stringent building codes for seismic or high-wind events - gives builders and homeowners confidence that the connection meets elevated structural performance requirements where code demands it.
• Slotted for adjustability - allows minor position corrections during installation so the post can be aligned precisely without starting over.
• Fastener holes are slightly offset - helps prevent fastener interference when driving hardware, resulting in a cleaner, more reliable installation.
• Base 16 ga. steel with 12 ga. straps - heavier strap gauge reinforces the connection points where load transfer is greatest, balancing strength where it matters most.
• Compatible with Outdoor Accents decorative side plates (APBDSP) - lets you extend the ornamental finish to the sides of the base for a cohesive, polished appearance on visible structural posts.
• Installs with STN22 hex-head washers and SDWS22312DBB structural wood screws - pairing with matched Outdoor Accents hardware keeps the aesthetic consistent and ensures the fastener system is rated for the application (fasteners sold separately).

Why This Product

• Built for rough-cut lumber where standard post bases fall short - the APB44R is sized specifically for a true 4x4 rough post with actual 4 in. x 4 in. dimensions, ensuring a snug, code-compliant fit that nominal-sized bases cannot provide.
• Structural performance without sacrificing appearance - the Mission Collection ornamental profile means load-bearing hardware does not look utilitarian, making this base a practical choice for visible outdoor living spaces like pergolas and covered patios.
• Two-stage corrosion protection engineered for harsh outdoor conditions - the combination of ZMAX galvanization underneath a black powder coat creates redundant barriers against moisture and the corrosive chemistry of treated lumber, extending the service life of the connection.
• Rot-reducing standoff design addresses a common long-term maintenance problem - by lifting the post end 1 in. above the concrete, the built-in standoff tackles one of the most frequent causes of post failure in outdoor structures before it can start.

Specifications

• MPN: APB44R
• Member Size: 4x4 rough
• Width: 4 1/16 in.
• Length: 3 in.
• Height: 6 3/4 in.
• Steel Gauge: Base 16 ga.; strap 12 ga.
• Coating: ZMAX
• Finish: ZMAX Galvanized with Black Powder Coat
• Country of Origin: United States

Approved Applications

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

Frequently Asked Questions

What size post does the APB44R fit?

The APB44R is designed for a 4x4 rough post, meaning the post must have an actual measurement of 4 in. x 4 in. It is not compatible with nominal 4x4 lumber, which measures 3-1/2 in. x 3-1/2 in. If you have a nominal 4x4 post, you will need the APB44 instead.

What fasteners are required to install the APB44R?

Install with (4) STN22 Outdoor Accents hex-head washers, (4) SDWS22312DBB Outdoor Accents structural wood screws, and (1) 5/8 in. concrete anchor. Fasteners are sold separately.

How does the APB44R protect against post-end rot?

The APB44R features a 1 in. standoff from the concrete surface. This gap helps prevent moisture from accumulating at the post end, significantly reducing the risk of post-end rot over time.

Is the APB44R suitable for high-wind or seismic regions?

Yes. The APB44R is designed to meet stringent building codes for seismic or high-wind events, making it appropriate for use in areas with elevated structural performance requirements.

Related Products

• - Post base for nominal 4x4 lumber
• - Outdoor Accents structural wood screws
• - Outdoor Accents hex-head washers
• - Compatible anchors for post base installation
• Simpson Strong-Tie Outdoor Accents - Complete collection

Note: This connector is designed for rough cut lumber, NOT nominal lumber (most common). This will only fit a post that measures an actual 4 in. x 4 in. If you have a nominal post measuring 3-1/2 in. x 3-1/2 in., you will need the ornamental post base.