
The Simpson Strong-Tie CPT140Z Concealed Post Base is designed to anchor 140–152mm square timber posts to concrete footings and slabs. The concealed design hides the connection for a clean finish on decks, pergolas and outdoor structures.
Suitable for builders and landscapers installing deck posts, pergola uprights and structural timber columns where a concealed post-to-slab connection is required.
Simpson Strong Tie Concealed Post Base Suits 140mm to 152mm Square Posts is designed for secure post installations, providing a clean and concealed appearance while reducing decay risk.
The Simpson Strong Tie Concealed Post Base is engineered to accommodate 140mm to 152mm square posts, offering a 25mm standoff height that minimises the potential for timber decay at the post end. This product can be cast-in-place or retrofitted using adhesive or mechanical anchors, ensuring versatility in various applications. Constructed from heavier gauge carbon steel and finished with ZMAX® Galvanised, it ensures a robust connection. The CPT series is part of the concealed structural connector range, combining structural integrity with an unobtrusive design. It is suitable for Glulam and solid sawn timber, and all necessary installation pins and fasteners are included. The product is also available in multiple sizes, including options for corrosive environments.
| Dimensions (W x H x D) | 137mm x 146mm x 137mm |
| Weight | 1.63kg |
| Material | 2.7mm Carbon Steel with ZMAX® Galvanised Finish |
| Colour | Black |
| Model Number | CPT140Z |
Simpson Strong Tie Concealed Post Base Suits 140mm to 152mm Square Posts is a reliable solution for post support needs.




