---
product_id: 67461105
title: "SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1"
brand: "simpson"
price: "$137.84"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/67461105-simpsonstrong-tie-concealed-post-base-cpt66z-6x6-silver-pack-1
store_origin: US
region: United States of America
---

# 1 in. standoff height Supports 6x6 posts ZMAX® steel finish SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1

**Brand:** simpson
**Price:** $137.84
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Build with Confidence!

## Quick Answers

- **What is this?** SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1 by simpson
- **How much does it cost?** $137.84 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/67461105-simpsonstrong-tie-concealed-post-base-cpt66z-6x6-silver-pack-1)

## Best For

- simpson enthusiasts

## Why This Product

- Trusted simpson brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek Design:** Flat head style for a clean, modern look.
- • **Sturdy Support:** Engineered for lasting stability in any weather.
- • **Decay Prevention:** Elevated design minimizes decay risks.
- • **Professional Grade:** Built to meet code requirements for safety.
- • **Versatile Installation:** Compatible with cast-in-place or retrofit anchorage.

## Overview

The Simpson Strong-Tie Concealed Post Base CPT66Z is a robust 6x6 post base designed for durability and compliance with building codes. With a 1 in. standoff height, it effectively prevents decay in exposed conditions, ensuring your structures stand the test of time. Made from ZMAX® steel, this post base is perfect for both new constructions and retrofits, making it a versatile choice for any professional builder.

## Description

SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1

## Features

- The 1 in. standoff height is code-required when supporting permanent structures that are exposed to weather or water splash, or in basements
- The standoff reduces the potential for decay at post or column ends
- The anchorage for the CPTZ can be either cast-in-place or retrofit with adhesive or mechanical anchors
- Post Size: 6 in. x 6 in

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Simpson Strong Tie |
| Part Number | CPT66Z |
| Product Dimensions | 13.65 x 14.53 x 13.65 cm; 1.62 kg |
| Item model number | CPT66Z |
| Size | Pack of 1 |
| Finish | ZMAX® |
| Material | steel |
| Item Package Quantity | 1 |
| Head Style | Flat |
| Measurement System | inch |
| Included Components | 1 x 6x6 CPT Post Base |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 1.62 kg |

## Images

![SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/61wp8KMkn7L.jpg)
![SIMPSONStrong-Tie Concealed Post Base CPT66Z 6x6, Silver, Pack of 1 - Image 2](https://m.media-amazon.com/images/I/61BcuPqKtJL.jpg)

## Questions & Answers

**Q: What size post is this for. The description states 6 x 6 but the diagram states 4 x 4 inches. Which is it please?**
A: I can see your confusion the 2nd diagram shows 4 x 4 all the other details  are for 6 x 6. My posts are 6 x 6 and the bases fit perfectly

**Q: Does this have a weight limit? I intend to mount 150mm oak posts to support a tiled porch. Thanks**
A: Hi, I'm undertaking a similar job myself. I looked on the Simpson Strong Tie site, and the technical spec only covers load characteristics in KNewtons. I'm taking a risk with this one and assuming the CPT66Z is suitable for a 6" square post.

**Q: How thick is the upright part that is embedded into the wood. ?**
A: It’s about 5/6mm from memory. I used this product a while ago now

**Q: How many in a pack**
A: One in a box.

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-22*