4x4 Post Base 8 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…
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4x4 Post Base 8 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…

4.6/5
Product ID: 514540531
Secure Transaction
12 interest-free installments with tabby
📏Inner size 3.6x3.6 inches fits standard 4x4 posts perfectly
🖤Black powder-coated finish for rustproof protection
🛠️13GA thick solid steel for ultimate durability

Description

🖤 Elevate your outdoor space with steel-strong, rustproof confidence!

  • BUILT TO LAST - Crafted from 13-gauge solid steel with a sleek black powder coat, these bases resist rust and weather damage for years of reliable support.
  • PRECISION FIT - Inner dimensions of 3.6x3.6 inches ensure a snug, secure fit for standard 4x4 posts, enhancing structural integrity and aesthetic appeal.
  • VERSATILE SUPPORT - Perfect for decks, pergolas, fences, mailboxes, and more—engineered to stabilize and secure your outdoor structures with confidence.
  • ROT RESISTANT DESIGN - Innovative bottom partition keeps wood elevated and dry, preventing rot and extending the life of your posts.
  • COMPLETE INSTALLATION KIT - Includes 48 expansion anchors, 48 socket head wood screws, and 64 self-tapping screws—all neatly stored inside the base for hassle-free setup.

The AXWHYS 4x4 Post Base kit features eight heavy-duty, 13-gauge solid steel brackets with a black powder-coated finish for superior rust resistance. Designed with a unique bottom partition to prevent wood rot, these bases fit standard 4x4 posts (3.6x3.6 inches inner size) and come complete with a comprehensive set of screws and anchors for concrete and wood installation. Ideal for decks, pergolas, fences, and mailbox posts, this kit ensures long-lasting, stable support for your outdoor projects.

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Specifications

ManufacturerAXWHYS
Part NumberAA-Base112
Item Weight18.17 pounds
Product Dimensions5.4 x 4 x 5.5 inches
Country of OriginChina
Item model numberAA-Base112
Size4x4 8
ColorBlack
Style4x4 inch
MaterialCarbon Steel
Included Components‎Necessary Hardware
Batteries Included?No
Batteries Required?No

Reviews

4.6

All from verified purchases

A**R

Solid steel.

Packaged really well.Good solid steel.Will see if it rusts...stay tuned.

D**S

Great value! Has all you need to attach.

Out of pure procrastination, I don't usually leave reviews, but with this product, I just had to do it! I'd give more stars if I could. Usually when I have a project like this I spend too much time at Lowe's or Home Depot looking for the attaching bracket and then all of the hardware to go with it, while also hoping I bought the right sizes, and don't have to run back out. This came with pretty much everything I needed for probably cheaper than I could have bought it for at the big box hardware store. Brackets are well built, sturdy, and all the hardware is included... Whether or not you're attaching to wood or concrete. Once I had these on hand it was a quick install. Great job to the seller. I would definitely buy these again! My only complaint is I could only buy them by fours. I only need three but it was still cheaper to do it this way then do it locally. Plus, again, it had everything I need.

G**

Very nice quality

Decent price, good quality

S**S

Wish they sold singles

I needed 5 so I had to buy 8. I like these post bases because they are tall for better post stability and they keep the wood posts off the concrete about 1/2” which helps to reduce wood rot. All 8 bases were in good shape and I had no problems with the welded flanges coming off like other reviewers have experienced.Note lumber expands when wet so if you buy air-dried posts they will be a tight fit in the bases. I had to knock each post down about 1/2" before they bottomed out. Air-dried lumber is the stuff that’s usually wet to the touch and greenish in color when you buy it. Kiln-dried lumber cost a little more but it’s contracted back to its original size by the time you buy it. Kiln-dried posts will be a little loose in the bases which allows for easier plumbing of the posts.Exterior concrete is usually poured with a slope for water runoff. I had to shim several bases to get them level and plumb. I used plastic horseshoe shims (see pic). A 1/16” shim doesn’t seem like a lot but it makes a big difference on a 5’ high post.The included hardware includes plated sleeve anchors. Sleeve anchors are not meant to be used in concrete; they are meant for hollow-wall installation such as brick and block. They will work but you probably won’t get all of them to grab properly and they’ll keep pulling the anchor out while you tighten it down. Also, plated steel will rust. The best anchors for concrete are STAINLESS STEEL WEDGE anchors. Also, the included wood screws are not rustproof. Hardware for exterior use should be either galvanized or stainless steel.In one picture you’ll see a little surface rust around a washer. This is from scratching the coating off the base during installation. This shows the bases themselves are not rustproof once the coating is disturbed. I’ll touch them up with black Rustoleum paint.Not that it matters but I’m a retired Master Marble Mason and 4th generation Journeyman Stone Mason. I’ve installed thousands of concrete anchors in my life.

M**E

Just right when you can’t dig a hole

We screwed these into the edge of an old concrete pad. The 4x4 weather-treated fence posts fit perfectly.A bonus is screw holes inside the base. (I snapped off too many concrete bolts screwing into bolts into the flanges. Totally my fault. Also I could add extra screws at gate posts.)I also liked that these bases seemed taller than others.

J**C

Very pleased

I bought these to use temporary as a support to tear down a patio overhang and I honestly thought they would be crappy and I didn’t really care because I just needed them very fast and thought I would throw away but when I received them they were made very nice with good looking welds. When i purchased I didn’t pay attention to see they came with so much hardware and I was surprised when i opened the package. Seller appears to take pride in product and it shows. It even came with a nice wrench unlike the really cheap flat ones you usually get that hurts your hands. Great product and great seller. If you complain about these your either their competitor or something is wrong with you and you complain about everything.

H**L

My deck posts look great!

So glad we found this product. The thickness and durability is amazing. It makes our deck posts look finished, just like we had hoped. The fit was great!

J**L

Sturdy and Easy

These were the best find for attaching the railing posts to the newly replaced deck. They made it so much easier and faster to connect the posts to the deck. And they look great!!

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Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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Secure Transaction
12 interest-free installments with tabby

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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