Model # GM-30

Internet #100039044

Store SKU #655843

LTL Home Products Groundmaster 30 in. Gray Post

LTL Home Products

Groundmaster 30 in. Gray Post

$1998 /each
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Product Overview

Install decking, retaining walls, small fences, signs, steps, piers and carports with the LTL Home Groundmaster 30 in. Gray Posts (24-Pack). These posts are constructed of steel and are rust and scratch resistant.

  • Heavy-gauge steel construction
  • 30 in. long
  • Scratch-resistant powder-coated finish
  • Rust and corrosion resistant
  • Includes 2 mounting bolts
  • Tested to withstand nature is extremes
  • Two bolts (included) safely secure post
  • Note: Product may vary by store.



Assembled Depth (in.)
4 in
Assembled Height (in.)
35.5 in
Assembled Width (in.)
4 in


Color Family
Fastener Type
Specialty Fastener
Package Quantity
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
1 year

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Customer Questions & Answers

I believe that while the spec says it's 4"x4", the nominal size of a 4x4 is actually 3.5" x3.5". ...

I believe that while the spec says it's 4"x4", the nominal size of a 4x4 is actually 3.5" x3.5". Is that what this will fit?
Asked by: daw
No, the nominal size is not 3.5" x 3.5".
Answered by: CommunityAnswer
Date published: 2017-03-08

could 2 be used to make a hammock stand with 4x4's?

could 2 be used to make a hammock stand with 4x4's?
Asked by: gyptian
The Groundmaster posts are not recommended for hammocks or swings.
Answered by: Customer Service
Date published: 2017-06-20

Can these be used to install a 6 foot tall wooden privacy fence using 4x4 posts?

The distance between posts is 8 feet
Asked by: Dj
The Groundmaster post is not recommended for fences over 5 foot. The fence must also be an open fence to allow air flow through.
Answered by: Customer Service
Date published: 2017-06-05

Will this support a plat form for my dog kennel 12x12 using 2x4x12 for a frame and joist and 1/2 inch plywood?

Asked by: David
The platform should be no more than 2' off the ground and each Ground Master has been tested to support a 480 lb. load. We do recommend that you contact your local building inspector to determine your community code.
Answered by: Customer Service
Date published: 2017-06-01
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Customer Reviews

Groundmaster 30 in. Gray Post is rated 3.5 out of 5 by 16.
Rated 1 out of 5 by from Avoid These. Imported junk! Installed a 6' stockade fence using Stanley (tool manufacturer) spikes twenty years ago. Stanley doesn't make them anymore, too bad. Twenty year old Stanley spikes withstood Hurricane Sandy. Recently replaced three spikes in my fence with this brand. Not one lasted 6 months and all broke in moderate winds. Each spike broke away from the post collar. Weak material and/or crummy welds? Maybe you can use these for a mailbox but not a fence!
Date published: 2016-02-25
Rated 1 out of 5 by from Worthless - Save Yourself a Headache and Use Concrete These are much easier to install than digging post holes and using concrete, but if you are building a fence that you want to stand up any amount of wind then use concrete. Also, they rust very quickly. I purchased 9 of these anchors to build two fences. I used 4 anchors for one fence and sunk the 5 anchors for the second fence. Before I could put up the second fence a wind storm came trough and blew over the first fence. Three of the four anchors broke clean off at the joint and one was severely bent. Not wanting to face the same problem with the second fence, I dug up all 9 anchors and tried to return them to Home Depot. Home Depot would not take the three broken anchors or the bent one, and of the other five that had just been in the ground (without a fence), three were too rusted for them to take back. Too rusted? I've had them for three weeks? I am seriously disappointed with this product. I read several reviews for Oz-Post and was very impressed with the technology. I asked a store associate for Oz-Post and they recommended this product. From what I have seen, the quality of this anchor is nowhere near that of Oz-Post. These anchors have poor welds and poor corrosion resistance coating. I would definitely NOT recommend this product.
Date published: 2015-03-30
Rated 1 out of 5 by from Lots of work to use! These items say they are for 4 x 4 posts. A 4 x 4 post doesnt fit in these with out shaving off the sides and edges to get them started and then they open enough for your post to fit into but then the provided bolts are too short and you have to get longer ones. I am very disappointed in these and if I didn't have the right tools and not have wanted to travel back to my store I would have returned them. I am not real happy with my project and will eventually replace my posts by digging holes and pouring concrete for my posts. The extra labor of digging a hole and the much cheaper cost of concrete is a better way to go for my money!
Date published: 2014-03-29
Rated 1 out of 5 by from Poor Quality don't wast your time I installed these [5] anchores last fall ,2014 for a 6' fence [4 panels]. 2 rusted and broke at base less than 6 months after install.Whole fence less than 100 lbs.Didn't work waste of time.Replaced with concrete and 4x4 like I should have to started with like everyone says.These MIGHT work for a mailbox post but thats it.
Date published: 2015-09-29
Rated 4 out of 5 by from Great for fence post repairs I have used 4 of these to replace wooden fence posts that have rotted at ground level. I cut the wooden fence post right above the rot, sunk one of these in the ground, placed the remaining fence post in the slot, tightened down the bolts, and presto! We recently had two severe windstorms blow through the St Louis area and these 4 repaired fence posts held firm. Unfortunately, 8 similarly rotting fence posts snapped and took my 6' privacy fence down. Now I'm scrambling to find 8 more of these ground master post holders but they are nowhere to be found, in the store or online. I recommend you buy them when you see them as they seem to be out of stock often. I wish I would have been proactive and replaced my 8 other marginal posts before they snapped. The reason I only gave it 4 stars is because it would be helpful if these came with a strong plastic insert to pound them in with. As it is, you need to find a block of wood to do the pounding and they tend to splinter, causing difficulties. Secondly, it is somewhat difficult to get these to go in square without twisting in the ground somewhat. This slightly off-centers the fence post which makes it more difficult to attach the fence panel. Overall, this is a very inexpensive way to repair your fence without a lot of fuss and effort which is why I like them.
Date published: 2006-07-29
Rated 4 out of 5 by from .this new version uses thinner steel and metric bolts I've been using these posts for many years but I feel my recent purchase was merely the better of two inferior products on the display. Sure the construction is still excellent but the steel used now is thinner than before and the clamping bolts are now metric requiring a new wrench set. I can live with the metric bolts but I will be searching for alternative posts because of the thinner metal. The other post on display at HD is painted green, from China and the wood fastening method is inferior. It's not an option.
Date published: 2012-05-30
Rated 5 out of 5 by from 30 inch Groundmaster Post System I chose this product because I did not want to have to dig up my landscaping when building a new fence around my pool. As with any type of new project, you learn the best way to do it after installing a couple of the stakes. I am very happy with the results, I did not have to redo any of my landscaping, and they were easy to replace after hurricane wilma had broken three of them. I have recommended them to two of my neighbors.
Date published: 2006-05-28
Rated 3 out of 5 by from Good post holder, cheap bolts I bought two of these post holders, one for a mailbox and one to support a gate. The post holders are very sturdy. I put them through fairly rocky ground and had to "restart" a couple of time to find a spot, but didn't see any deformation of the posts. Two things could be improved: First, they do not hold a 4x4 as tightly as they should, I had to shim my post to remove the play. Second, the bolts that are shipped are easily stripped. You need to use a fair amount of torque to get a good grip on the post, and even a properly threaded nut caused stripping on one of the bolts.
Date published: 2009-06-08
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