The Simpson APB88R Ornamental Rough Cut 8x8 Post Base is a decorative structural connector from Simpson's Outdoor Accents Mission Collection, engineered to anchor an 8x8 rough cut post or column securely to concrete. Built with ZMAX galvanization and finished with a black powder coat, it delivers a polished, corrosion-resistant connection point suited for pergolas, patio covers, and other top-supported outdoor structures where both appearance and structural integrity matter.

Key Features

• Designed to meet stringent building codes for seismic or high-wind events - gives you confidence that the connection meets enhanced structural performance requirements in demanding environments
• Slotted for adjustability - allows for minor positioning corrections during installation so your post lines up precisely without starting over
• 1 in. standoff from the concrete surface - keeps the post end elevated above moisture that can collect on concrete, helping prevent rot and extending the life of your post
• Fastener holes are slightly offset - reduces the risk of fasteners interfering with one another during installation, making the process cleaner and more reliable (fasteners sold separately)
• ZMAX galvanization on the base - provides extra corrosion resistance for exterior applications and compatibility with treated-wood lumber
• Straps finished with ZMAX and a black powder coat - adds a refined decorative appearance while maintaining the corrosion protection needed for outdoor use
• Base 14 ga. steel with 12 ga. straps - heavier strap gauge delivers added strength at the connection points where load transfer is most critical
• Compatible with Outdoor Accents side plates (APBDSP) - lets you extend the decorative look of the installation for a more finished, architectural appearance

Why This Product

• Form and function in one connector - the black powder-coat finish over ZMAX galvanization means this post base handles the corrosive conditions of exterior and treated-wood applications without sacrificing the clean, ornamental look expected in visible outdoor structures like pergolas and patio covers
• Built-in rot protection - the 1 in. standoff is a practical design detail that keeps wood off the concrete, addressing one of the most common causes of post failure in outdoor installations before it becomes a problem
• Code-compliant structural performance - engineered to meet stringent building codes for seismic and high-wind events, making this base a dependable choice in regions where structural connector performance is regulated or inspected
• Precision fit for true 8x8 rough cut lumber - sized specifically for posts with an actual 8x8 inch dimension, so there is no guesswork about whether the connector will fit your material correctly

Specifications

• MPN: APB88R
• Member Size: 8x8 rough
• Width: 8 in.
• Length: 7 in.
• Height: 10-5/16 in.
• Gauge: Base 14 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 applications requiring seismic or high-wind resistance
• Applications using treated-wood lumber

Frequently Asked Questions

What size post does the APB88R fit?

The APB88R is designed specifically for 8x8 rough cut lumber - meaning the post must have an actual measured dimension of 8x8 inches. It is not compatible with nominal 8x8 lumber, which typically measures 7-1/2 x 7-1/2 inches. If you have a nominal post, see the APB88 instead.

What fasteners are required to install the APB88R?

Install with (8) SDWS22312DBB Outdoor Accents structural wood screws, (8) STN22 Outdoor Accents hex-head washers, and (2) 5/8 in. concrete anchors. All fasteners are sold separately.

How does the APB88R help protect against post rot?

The APB88R features a 1 in. standoff from the concrete surface. This gap keeps the end of the post elevated above moisture that can accumulate on concrete, helping to prevent rot at the post end over time.

Is the APB88R suitable for high-wind or seismic zones?

Yes. The APB88R is designed to meet stringent building codes for seismic or high-wind events, making it appropriate for use in areas that require enhanced structural performance from post base connections.

Related Products

• - Outdoor Accents Post Base for Nominal 8x8 Lumber
• - Outdoor Accents Structural Wood Screws
• - Outdoor Accents Hex-Head Washers
• - Outdoor Accents Decorative Post Base Side Plates
• Simpson Strong-Tie Outdoor Accents Collection

Note: This connector is designed for rough cut lumber, NOT nominal lumber (the most common type). This post base will only fit a post that measures an actual 8x8 inches. If you have a nominal post measuring 7-1/2 x 7-1/2 inches, you will need the Ornamental Post Base instead.