Vortex 18 in. 4 x 4 Adjustable Mailbox Post Anchor-APANCHR-HSG-U - The Home Depot



Internet # 202326088

18 in. 4 x 4 Adjustable Mailbox Post Anchor

Vortex 18 in. 4 x 4 Adjustable Mailbox Post Anchor

This item has been discontinued.
The Home Depot no longer carries this specific product.

$29.98 / each



Internet # 202326088

The Liberty Outdoor 18 in. Steel Adjustable Mailbox Post Anchor is designed for use with the Liberty Outdoor Mailbox Post Kit or a traditional 4 x 4 wood post. This anchor features an adjustable base plate with spiral design that installs easily and allows adjustment after installation. Instructions included.

  • Provides a total cement-free solution with the liberty outdoor mailbox post kit and vortex ground anchor program
  • May be used with traditional 4 x 4 wood posts or in combination with the liberty outdoor mailbox post kit
  • Powder-coated, steel construction helps prevent rust and corrosion
  • Unique, patented adjustable top plate allows fine tuning of post after anchor installation without removing anchor
  • Spiral and bladed design provides high pull-strength in all soil-types
  • Simple installation - no digging, hammering or mixing


Assembled Depth (in.)  28 in  Assembled Height (in.)  8 in 
Assembled Width (in.)  8 in  Product Depth (in.)  28 
Product Height (in.)  Product Width (in.) 
Accessory Type  Other  Color  Hammerslag Green 
Product Weight (lb.)  12.75 lb  Returnable  60-Day 
Warranty / Certifications
Manufacturer Warranty  Limited Lifetime Warranty 


Rated 3.8 out of 5 by 11 reviewers.
Rated 4.0 out of 5.0 by Difficult to install, but it does the job The postal service informed me as a new resident that I needed to install a curbside mailbox. I fretted over this, about whether to go with concrete or some other type of anchor. I decided to try this product after watching videos online. It is NOT easy to install. (Perhaps that is due to the rocky or rooty New England Soil.) After leveling a circle to install the screw, I inserted this anchor and began to turn. Each time I did it, it would get about 2/3 of the way in and begin to go crooked. I moved it around in my space about 4 times and finally found a place where it would go all the way in. But it is not level. But by using some sturdy stones and some shims I made out of an old 1 by 1 piece of pressure treated wood, I was able to make the anchor relatively sturdy and level. Once I did that, and then finished my mailbox install, its seems to be holding up okay. August 21, 2013
Rated 3.0 out of 5.0 by Mixed Results I'm in the northwest and the ground is very rocky, which made this quite a bit of work to screw into the ground. If your soil isn't as rocky, then I think you'll have better results. The anchor itself is quite solid and thicker steel than it seems from the picture. A crowbar or something similar was a must for me installing this (to use for leverage to twist it). Leveling the ground ahead of time didnt accomplish much. I ended up shimming it to get it level. In hindsight, I would have used a standard 4x4 and cement, but your results may vary. It wold have been less work with my rocky ground to just dig a hole and use some cement. May 1, 2011
Rated 5.0 out of 5.0 by Aint goin nowhere I didn't want to use cement with my mailbox post so I gave this a try. Screwing this into the soil was a challenge. It does not come with any additional tools, just the screw. The trick is getting the proper leverage to turn it. First I used a 4-way tire lug wrench. I killed myself. Finally I used a 6ft 2x4 and that did the trick. Solid base. May 29, 2011
Rated 5.0 out of 5.0 by Fabulous post anchor This thing is fabulous. My husband installed in a matter of minutes. Neighbor came to see what he used because he watched and saw how fast the new mailbox post was up. Excellent. November 15, 2010
Rated 4.0 out of 5.0 by Quick, easy install but I question its integrity. Installation could not be easier. I did it after a rain so the ground was fairly soft which allowed me to make slight adjustments to maintain level as I went. The only problem I've seen with the anchor itself is that only 5 months after installation it did rotate back out of the ground very slightly (maybe 5 degrees of rotation). However, that happened during summer months. I am concerned about what will happen as the ground freezes and thaws through the winter months. This probably wouldn't be that big of a problem had a mounted a wooden post on the anchor. I could just twist it back in once the ground thaws. I, however, mounted it with the "Liberty OutdoorBlack Traditional Full Size Square Mailbox Post Kit TFSSMPK-BL-R". Again, an easy install, but its flimsy. When I rotated the anchor the 5 degrees back to where it belongs I, obviously, had to grab the post and the mailbox as a leverage point. I was sure that screws that hold the post to the anchor were going to pop through the plastic post and I'd be walking back to my garage with post and mailbox in hand, but it held. I am certain, however, that over time with the daily jiggle created by opening and closing the box and the future need for rotations (unless I find a way to get enough leverage to rotate it at the base) will break this post. So, if you buy this anchor, I strongly recommend mounting a wooden post to it. September 8, 2011
Rated 5.0 out of 5.0 by Mailbox anchor Relatively easy to install. A little cement made it more sturdy. Much easier than using a wood post, and little damage if hit by a snow plow,car,etc September 16, 2014
Rated 5.0 out of 5.0 by Easy to use I liked this product. When it arrived, Ii found it to be sturdier and better built than I was expecting. It works very well for my bird bath. I don't know how stable it would be for a mailbox but it also depends a lot on the soil encountered. I was very pleased with this item for my use and it was very easy to install. August 26, 2014
Rated 2.0 out of 5.0 by Not stable solution for heavy mailbox and gravel under ground I had to dig almost all the way because I had construction gravel stones under surface and could not screw it in. After screwing a little bit into those stones I filled the hole with gravel and installed mailbox. My mailbox is heavy and was shaking so I had to throw the anchor away and pay a guy to dig everything out and install 4x4 wood bar into this hole and fill it with concrete. Now it is very stable. My purchase of this anchor was a waste of my time and money. May be it will work for somebody with good soil and no construction leftovers under ground. October 15, 2011
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