Model # 30161

Internet #202400933

Oz-Post T4-850 4 in. Square Wood Post Anchor (6-Case)


T4-850 4 in. Square Wood Post Anchor (6-Case)

$127.99 /box

Frequently Bought Together

Product Overview

Oz-Post is one of the best ways to secure a wood post in the ground. Oz-Post are not only extremely fast to install but can also help prevent your wood post from premature rot that can occur with direct burial in the ground. Oz-Post can also protect the wood from damage from weed eaters when the top sleeve is left exposed above the surface of the ground. Regardless of what you plan to build with Oz-Post you can be sure that your posts will be sturdy and long lasting for many years to come.

  • Fits a true 3-1/2 in. x 3-1/2 in. square post (pressure treated)
  • 6-Pieces per case
  • Hot dipped galvanized anchor
  • Suitable for contact with acq approved lumber

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

I want to us theses for the footings on a play set that will stand 4 feet high. Are these post anchors suitable for that

Asked by: Andrew
I think they would work very well. We use them on signs that stand 8 feet high, and they have always been rock solid.
Answered by: HARDtoREVIEW
Date published: 2016-08-03

Screws included?

Are the screws to anchor the posts provided?
Asked by: GregN
Answered by: PC
Date published: 2016-08-12

How many in a box?

Asked by: Tom
6 per box.
Answered by: HARDtoREVIEW
Date published: 2016-08-03

Will these support treated 4"x4" posts if posts will be supporting a tensioned tarp for playground shade?

Asked by: Gary
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Customer Reviews

T4-850 4 in. Square Wood Post Anchor (6-Case) is rated 4.3 out of 5 by 76.
Rated 5 out of 5 by from Able to put up a new fence without digging or... Able to put up a new fence without digging or using cement. Made the job easy!!
Date published: 2017-01-24
Rated 4 out of 5 by from Good solid product, worked well, was disappointed that is was made in China, and the fact that t... Good solid product, worked well, was disappointed that is was made in China, and the fact that the tapered section of the post/spike was slightly twisted and the post turned clockwise when driving it into the ground. I learned to compensate by starting the post with a slight turn counter clockwise when I starting setting the post. Overall made a tough job much easier.
Date published: 2016-12-07
Rated 5 out of 5 by from Excellent product. This is a good anchor system. No need for digging, cementing, etc. Went through tough ground fairly well. It helps to have a small metal plate to place into it as you are pounding it in. That will keep your wood from splitting inside and getting wedged tight.
Date published: 2016-10-11
Rated 4 out of 5 by from good for a one person job Bought OZ-Post to put up a fence. And since I was doing the job solo, I figured this method would be easier than using an auger. And they were easier. The down side is that the quality of the product isn't quite where I would like it. The anchors, if they are not close to perfect, will twist as they are pounded in the to ground. So you take all this time to make sure your spacing is correct, that your path is straight and true, but then your end up with posts that are not square. I tried several different methods so that they would finish square, but none were really successful. Being super detailed, this really bothers me. Secondly, while I feel these will be sufficient for my fence, perhaps it is the nature of a horizontal fence, or the fact that my post are not set in 24-36 in of concrete, but the fence does not have the lateral strength of standard concrete posts. Lastly, particularly if you are building a horizontal fence, you have to come up with a method of covering the part of the anchor that is above ground. May or may not be important to others. I would use them again if going solo, or needed a job done super quickly, Otherwise I think I would go with standard concrete posts.
Date published: 2016-08-30
Rated 5 out of 5 by from Good product Easy to install with a rented jackhammer. I would use this product again.
Date published: 2016-12-11
Rated 5 out of 5 by from Fast and Secure Installed 30 Oz posts for my backyard over 3 years ago, no rust, no wood rot, fence is still standing secure. Even have 2 doors for entrance are holding up great. Soil was hard, but installation went easily with jackhammer, make sure you don't large rocks will not work. Product does cost a little more but the time you save on not pouring concrete and digging holes is worth it . Great Product would buy again
Date published: 2016-03-16
Rated 5 out of 5 by from Sure beats digging holes My son had purchased these when he built a picket fence at the top of a retaining wall in back of his house. I was sold on them from that experience. When I needed to replace my 6 ft high fence around my yard, I immediately bought these. They are much easier to use than digging holes (his ground is clay and sand stone) and since the posts do not have contact with the ground, there is less chance of rot. These support my fence well. I would recommend buying the level for these. My son made his own hammer spacer, so we did not need to purchase this.
Date published: 2013-10-07
Rated 5 out of 5 by from OZ-POST Install We purchased 48 of the T4-850 OZ-Posts and they worked just as advertised. We made sure we have our corners and string lines correct before we started and the process of installing these posts save time and labor. We started installing almost 400 linear feet of fencing and were able to install of all the OZ-Post supports, 4" wooden support posts and 90% of the 3-rail runner supports in about 8 hours with 4 people. Overall a great product. On average we put down each post in about 6 minutes after all the measuring was done with a 75lb jack hammer rental.
Date published: 2010-11-15
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