The Simpson 8 x 8 Black Composite-Plastic Standoff Post Base is an engineered composite-plastic column base designed by Simpson for use with nominal 8x8 solid wood posts and columns in both indoor and outdoor structural applications. It attaches to the bottom of the column and anchors to concrete using a threaded rod and epoxy, creating the code-required 1-inch standoff that keeps the base of the post elevated above the concrete surface - reducing moisture contact and helping protect the structural integrity of the column over time. The black composite-plastic construction delivers a clean, finished look suited to decorative and structural column installations alike.

Key Features

• Designed for nominal 8x8 posts and columns - ensures a precise, code-compliant fit for standard 8x8 structural and decorative column bases without modification.
• Provides the code-required 1-inch standoff - elevates the post base above the concrete surface to help prevent direct moisture contact, supporting long-term structural performance.
• Engineered composite plastic construction - will not rust or corrode, making this standoff base equally dependable in exposed outdoor environments and protected indoor settings.
• Black finish - delivers a custom, finished appearance that complements both painted and natural column installations without the need for additional touch-up.
• Attaches to concrete using threaded rod and epoxy - provides a secure, load-rated connection between the column base and concrete footing for reliable structural anchoring.

Why This Product

• Built for indoor and outdoor use - the composite-plastic material resists rust and corrosion, so this standoff post base holds up in exterior column applications exposed to the elements just as well as it does in interior structural settings.
• Load-rated and code-compliant - the CPS series is load rated and provides the 1-inch standoff required by code, giving builders and contractors confidence that the installation meets structural requirements.
• Made in the United States by Simpson - backed by a brand with a long-standing reputation in structural connectors and hardware, this composite standoff base is purpose-engineered for consistent, reliable performance in column base applications.
• Versatile anchoring method - the threaded rod and epoxy attachment system allows the base to form a strong bond to concrete, making it a practical solution for new construction and renovation projects involving solid wood column installations.

Specifications

• Manufacturer Part Number (MPN): CPS7
• Brand: Simpson Strong-Tie
• Nominal Post Size: 8x8
• Material: Composite Plastic
• Finish: Composite Plastic (Black)
• Standoff Height: 1 in. (code-required)
• Installation Fasteners: (4) 0.148-in. x 3-in. nails and (1) 5/8-in. diameter anchor bolt (sold separately)
• Length: 7-1/4 in.
• Width: 7-1/4 in.
• Height: 1-1/4 in.
• Country of Origin: United States

Approved Applications

• Nominal 8x8 solid wood post and column bases
• Indoor structural column installations
• Outdoor structural column installations
• Concrete-to-column connections using threaded rod and epoxy

Frequently Asked Questions

What size post or column is the CPS7 designed to fit?

The CPS7 is designed for use with a nominal 8x8 post or column.

Can the CPS7 be used outdoors?

Yes. The CPS is a composite-plastic standoff base designed for use both indoors and outdoors. The engineered composite plastic will not rust, making it well suited for exterior applications.

What fasteners are required to install the CPS7?

Installation requires (4) 0.148-in. x 3-in. nails and (1) 5/8-in. diameter anchor bolt. The base attaches to the bottom of the solid wood column and to concrete with threaded rod and epoxy.

Does the CPS7 provide the standoff distance required by code?

Yes. The CPS7 provides the code-required 1-in. standoff between the base of the post or column and the concrete surface.

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