--- product_id: 489718289 title: "4x4 Post Base 4 Pcs, (Inner Size 3.6x3.6) Post Anchors, 13GA Thick Solid Steel & Black Powder Coated,Deck Post Brackets Support Deck Base Plate Pergola Brackets Fence Kit Mailbox Mount | 13GA Thick Solid Steel & Black Powder Coated|Deck Post Brackets Support Deck Base Plate|Pergola bracket|Fences|Mailbox Mount" brand: "axwhys" price: "€ 162.82" currency: EUR in_stock: true reviews_count: 13 category: "Axwhys" url: https://www.desertcart.be/products/489718289-4x4-post-base-4-pcs-inner-size-3-6x3-6 store_origin: BE region: Belgium --- # Inner size 3.6x3.6 inches Black powder coated rustproof finish 13GA thick solid steel 4x4 Post Base 4 Pcs, (Inner Size 3.6x3.6) Post Anchors, 13GA Thick Solid Steel & Black Powder Coated,Deck Post Brackets Support Deck Base Plate Pergola Brackets Fence Kit Mailbox Mount | 13GA Thick Solid Steel & Black Powder Coated|Deck Post Brackets Support Deck Base Plate|Pergola bracket|Fences|Mailbox Mount **Brand:** axwhys **Price:** € 162.82 **Availability:** ✅ In Stock ## Summary > 🖤 Fortify your outdoor space with sleek, rustproof strength! ## Quick Answers - **What is this?** 4x4 Post Base 4 Pcs, (Inner Size 3.6x3.6) Post Anchors, 13GA Thick Solid Steel & Black Powder Coated,Deck Post Brackets Support Deck Base Plate Pergola Brackets Fence Kit Mailbox Mount | 13GA Thick Solid Steel & Black Powder Coated|Deck Post Brackets Support Deck Base Plate|Pergola bracket|Fences|Mailbox Mount by axwhys - **How much does it cost?** € 162.82 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/489718289-4x4-post-base-4-pcs-inner-size-3-6x3-6) ## Best For - axwhys enthusiasts ## Why This Product - Trusted axwhys brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Heavy-Duty Steel Strength:** Crafted from 13-gauge solid steel for unmatched durability and long-lasting support. - • **Precision Fit for 4x4 Posts:** Inner dimensions of 3.6x3.6 inches ensure a snug, secure fit for standard 4x4 posts. - • **Innovative Rot-Prevention Design:** Unique base partition and drainage holes protect wood from moisture damage, extending the life of your deck or pergola. - • **Weatherproof Black Powder Coating:** Rustproof and UV-resistant finish keeps your posts looking sleek and sturdy season after season. - • **Complete Installation Kit Included:** Comes with 24 expansion anchors, 24 wood screws, 32 self-tapping screws, and a wrench for hassle-free setup. ## Overview The AXWHYS 4x4 Post Base Set includes four heavy-duty, 13-gauge solid steel brackets with a black powder-coated finish designed to resist rust and weather damage. Each base fits standard 4x4 posts (3.6x3.6 inches inner size) and features a unique partition and drainage system to prevent wood rot. The package includes all necessary screws and anchors for concrete and wood installation, ensuring a secure, long-lasting foundation for decks, pergolas, fences, and mailbox posts. ## Description Product description 4x4 Post Base The post bracket is waterproof and sun-resistant with optimum material. It is very suitable for deck brackets, porch railings, stair handrails, mailbox posts, etc 4x4 Post Bracket 4x4 Post bracket provides heavy duty support for your post. It's designed for heavy use and has topped off with a reliable powder coating. Easy Installation The post base installation is very simple.Just insert the wood into the base. Tighten the screws to be done. Sturdy And Reliable The big hole in the middle of the 4x4 post base is a drain hole plus 4 small drain holes. There are 6 screw holes around the base. Make it stronger. Accessory Included Each post base is equipped with screws for concrete floor and wooden floor. 4x4 POST BASE 1X Wrench 24 X expansion anchors 24 X socket head wood screws 32 X Phillips head self-tapping screws The actual size of inside these post base is 3.6x3.6 inches. Once installed, it is very sturdy and reliable. Can be in good condition for many years .There is no need to worry that it will rust. Quantity:4 PCS Material: Powder Coated Steel Color:Black Outer Size: 4X4 Inch Inner Size:3.6X3.6 Inch 4x4 Deck Post Base Review: Great product. - These for 4x4 posts easily. Look great and held up to winter and exposure to road salt spray thus far. I recommend using the mounting screws and sleeves provided for concrete mounting. Our contractor used tapcons which are rusting and I’ll have to redo in the Spring. Follow the instructions!! Ugh. But the product is excellent. Review: Good product - Good price ## Features - Material Of 4x4 Post Base: Made of Solid Steel, Black Powder Coated, Rustproof and Strong. - Deck Post Base： Used to support porch railings, pergolas, gazebos, fences, deck brackets, post brackets and mailbox post brackets. - Unique design: There is a partition at the bottom of the 4x4 post base, which is designed to be completely separated from the ground. Long term use will not cause the wood to rot due to rain. There is a small square box in the middle of base to make it more stable - Screws & Anchors Supplied : A wrench. 24 x expansion anchors for concrete floors, 24 socket head wood screws for wood floors, 32 Phillips head self-tapping screws for 4x4 post fixation.All screws are inserted inside the base. - After Sales---If you have any installation questions or other problems. Feel free to contact us. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BGXT52DG | | Best Sellers Rank | #3,415 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Decking Post Anchors & Bases | | Brand | AXWHYS | | Brand Name | AXWHYS | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 876 Reviews | | Grade Rating | Residential | | Included Components | Necessary Hardware | | Item Dimensions | 5.4 x 4 x 5.6 inches | | Item Form | Metal | | Item Shape | Square | | Item Type Name | Post Base | | Item dimensions L x W x H | 5.4 x 4 x 5.6 inches | | Manufacturer | AXWHYS | | Material | Carbon Steel | | Model Number | POST489 | | Number of Items | 4 | | Part Number | POST489 | | Shape | Square | | Unit Count | 4.0 Count | ## Images ![4x4 Post Base 4 Pcs, (Inner Size 3.6x3.6) Post Anchors, 13GA Thick Solid Steel & Black Powder Coated,Deck Post Brackets Support Deck Base Plate Pergola Brackets Fence Kit Mailbox Mount | 13GA Thick Solid Steel & Black Powder Coated|Deck Post Brackets Support Deck Base Plate|Pergola bracket|Fences|Mailbox Mount - Image 1](https://m.media-amazon.com/images/I/71+1Ps0EKdL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: How do I attach a railing to this 4" from the bottom?** A: Railings run horizontal. If you are referring to a 4x4 post it just drops in and secured by screwing in from base holes. You may need a support bracket from big brand hardware store mounted to your post to support any railing mounted 4 in from base. **Q: What is the distance between the centers of the holes in the base?** A: Hello The distance between the the center of the hole at the bottom of base is 1.7 inch. Thank you **Q: What size do you drill in concrete appliction?** A: Hello It's 5/16 drill in concrete application. Thank you **Q: Drill bit for concrete anchors?** A: Hello Drill bit for 6x6 post base is 0.4 inch. Thank you ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product. *by M***D on March 30, 2026* These for 4x4 posts easily. Look great and held up to winter and exposure to road salt spray thus far. I recommend using the mounting screws and sleeves provided for concrete mounting. Our contractor used tapcons which are rusting and I’ll have to redo in the Spring. Follow the instructions!! Ugh. But the product is excellent. ### ⭐⭐⭐⭐⭐ Good product *by J***Z on May 19, 2026* Good price ### ⭐⭐⭐⭐⭐ Nice brackets *by H***K on April 18, 2026* I purchased these as deck railing bases for a deck renovation project. First let me say that I'm extremely impressed with the heaviness and stoutness of the anchors for use in my application. I'd installed the old anchors with through bolts and every single one of them (even though preserved with the "old" CCA preservative,) had rotted around the bolts. They've been a huge hassle to remove after 20+ years, and I ended up just cutting many of them off. I'm trying to "future proof" (not getting any younger!) the deck and these should make it much easier to replace posts should it become necessary. On first try my posts would not fit into the sockets which is when I discovered that every post (I cut my own from 4x4s) was oversized and varied as much 2-3mm between them (anywhere from 91-93mm.) When I measured the actual bracket, it came in at 90mm. I ran each through my table saw (set at exactly 3.5") which produced a fit with just a smidge of wiggle room. Personally, I don't think I would use these on concrete, but for my application they should be fine. We'll see how well they hold up in the real world. ## Frequently Bought Together - AXWHYS 4x4 Post Base 4 Pcs, (Inner Size 3.6x3.6) Post Anchors, 13GA Thick Solid Steel & Black Powder Coated,Deck Post Brackets Support Deck Base Plate Pergola Brackets Fence Kit Mailbox Mount - Pylex Deck Sunblind System 11060, Louvers Bracket Shutter Hardware Kit, Up to 11 Boards (48'') - Black Steel Baked Powder Coating Brackets - TOSCOCO 30 Pcs Deck Railing Bracket Connectors for 2"×4“ (Actually 1.5”x3.5“) Wood Post to Handrail Connection, Railing Connectors with 210 Pcs Galvanized Black Screws for Wooden Stair Fence Railings --- ## 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.be/products/489718289-4x4-post-base-4-pcs-inner-size-3-6x3-6](https://www.desertcart.be/products/489718289-4x4-post-base-4-pcs-inner-size-3-6x3-6) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-20*