Simpson Strong-Tie CPT88Z 184mm x 184mm Concealed Post Base Pre-Galv

Part Number: CPT88Z
Pack Size: 1 Unit

Architectural-Grade Post Base for Large Timber Sections

The Simpson Strong-Tie CPT88Z Concealed Post Base is engineered for use with large timber posts, offering a clean, hidden-fix design ideal for premium structural and architectural builds. With a 25mm standoff height, it effectively elevates the post base above concrete surfaces to help prevent moisture absorption and reduce decay at the timber end.

Key Features

• Concealed post base for a minimal, professional appearance

• 25mm elevation above concrete enhances post durability and life span

• Compatible with timber sizes from 184mm x 184mm to 203mm x 203mm

• Includes knife plate, standoff base, and 3 dowels for secure installation

• Can be cast into concrete or retrofitted to existing foundations

Benefits

• Perfect for large structural timber posts in highly visible areas

• Preserves timber integrity in outdoor or exposed installations

• Eliminates the need for exposed mechanical fixings

• Facilitates faster, cleaner, and more accurate construction

Dimensions

• A (Post Width): 184mm

• B (Post Depth): 184mm

• Compatible Post Size Range: 184mm to 203mm

Material Specification

• Material: Steel

• Finish: Pre-galvanised zinc coating

• Suitable for use in internal and sheltered outdoor environments

Items Included

• 1 x Knife Plate

• 1 x Standoff Base

• 3 x Steel Dowels

Typical Applications

• Timber posts in pavilions, pergolas, and high-spec outdoor structures

• Large structural columns in landscaping or architectural projects

• Decorative timber features where visible fixings are undesirable

Important Note

Lateral restraint is required for safe and compliant installation.