--- product_id: 67461105 title: "Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base" brand: "simpson" price: "FREE" currency: EUR in_stock: false reviews_count: 12 url: https://www.desertcart.sk/products/67461105-simpson-strong-tie-cpt66z-zmax-galvanised-6-x-6-concealed store_origin: SK region: Slovakia --- # 1 in. standoff height Supports 6x6 posts ZMAX® steel finish Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base **Brand:** simpson **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔧 Elevate Your Build with Confidence! ## Quick Answers - **What is this?** Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base by simpson - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/67461105-simpson-strong-tie-cpt66z-zmax-galvanised-6-x-6-concealed) ## 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 The CPT concealed post base provides a clean, concealed look while providing a 25mm standoff height above concrete. The 25mm standoff reduces the potential for decay at the post end. The CPT can be fixed to concrete base with either M12 chemical or mechanical anchors (sold separately). ## 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 | |---------------|-------| | Asin | B00KYVWQNY | | Best Sellers Rank | 634,312 in DIY & Tools (See Top 100 in DIY & Tools) 6,366 in Brackets | | Brand | SIMPSON | | Colour | Silver | | Customer Reviews | 4.3 4.3 out of 5 stars (121) 4.3 out of 5 stars | | Finish | ZMAX® | | Global Trade Identification Number | 00707392373902 | | Included Components | 1 x 6x6 CPT Post Base | | Item Dimensions | 13.7 x 13.7 x 14.5 centimetres | | Item Type Name | Concealed Post Base CPT66Z 6x6 by Simpson Strong-Tie | | Item Weight | 0.15 Pounds | | Manufacturer | Simpson Strong Tie | | Material | Alloy Steel | | Model Number | CPT66Z | | Part Number | CPT66Z | | Unit Count | 1650.0 gram | | Upc | 707392373902 | ## Images ![Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base - Image 1](https://m.media-amazon.com/images/I/41Gy9tbp8-L.jpg) ![Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base - Image 2](https://m.media-amazon.com/images/I/51incUvQ2UL.jpg) ![Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base - Image 3](https://m.media-amazon.com/images/I/81EPBE-ZIDL.jpg) ![Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base - Image 4](https://m.media-amazon.com/images/I/51M2Y5nIXOL.jpg) ![Simpson Strong Tie CPT66Z ZMAX Galvanised 6 x 6 Concealed Post Base - Image 5](https://m.media-amazon.com/images/I/71YCFAZo4RL.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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great post fixings *by on Reviewed in the United Kingdom 30 June 2023* Love these. They are a good sturdy quality as is needed. Easy to fit and they keep the base of the post off the ground so less moisture can penetrate. Good bit of kit and worth the money. ### ⭐⭐⭐⭐⭐ Brilliant ! *by on Reviewed in the United Kingdom 18 June 2021* Makes anchoring wooden pillars and posts far more simple and secure , setting out still has to be done properly . Also keeps the base out of puddles , fantastic product 👍 ### ⭐⭐⭐ DIYers beware *by on Reviewed in the United Kingdom 3 May 2021* Look its a strong product, nothing wrong with quality. But a real pain to install I have a decent sized chop saw but it's not big enough to fit 6 inch post under making it really fiddly. I used circular saw and couldn't get deep enough to reach middle, so had to finish with hand saw and its not wide enough so real bit of messing to sort it. Just think about it before you commit to these. ## Frequently Bought Together - Simpson Strong-Tie CPT66Z CPTZ™ ZMAX® Galvanized Concealed Post Base for 6x6 - Simpson Strong-Tie - 2 Pack Simpson Strong Tie CPT66Z 6x6 Concealed Post Base with Pins & Washers by Simpson - Milescraft 1318 DrillMate Portable Drillling Guide – Precision Drilling Jig Attachment for Drilling Angled or Straight Holes, Adjustable Drill Guide Attachment, Portable Drill Press with 3/8” Chuck --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/67461105-simpson-strong-tie-cpt66z-zmax-galvanised-6-x-6-concealed](https://www.desertcart.sk/products/67461105-simpson-strong-tie-cpt66z-zmax-galvanised-6-x-6-concealed) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-07*