Model # 10550005

Internet #100350712

Store SKU #734283

null 11-1/2 in. x 8 in. x 11-1/2 in. Concrete Block
0742786400093

11-1/2 in. x 8 in. x 11-1/2 in. Concrete Block

  • Designed for installing and anchoring posts
  • Simple and easy installation
  • No holes to dig or concrete to pour
$550 /each
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Frequently Bought Together

Product Overview

  • Designed for installing and anchoring posts
  • Simple and easy installation
  • No holes to dig or concrete to pour
11-1/2 in. x 8 in. x 11-1/2 in. Concrete Block meets ASTM C 90 guidelines. For use in foundations or above-grade masonry walls. These 50 lb. blocks may be used for mounting of deck support posts. They are dimensionally true and uniform in texture.
  • Square concrete block with no large chips or breaks
  • Use in foundations or above-grade masonry walls
  • Uniform in shape, color and texture
  • Meets ASTM C 90 specifications
  • Used for mounting or supporting post
  • Note: product availability may vary by store

Product Overview

  • Designed for installing and anchoring posts
  • Simple and easy installation
  • No holes to dig or concrete to pour
Model #: 10550005
Sku #: 734283
Internet #: 100350712

11-1/2 in. x 8 in. x 11-1/2 in. Concrete Block meets ASTM C 90 guidelines. For use in foundations or above-grade masonry walls. These 50 lb. blocks may be used for mounting of deck support posts. They are dimensionally true and uniform in texture.

  • Square concrete block with no large chips or breaks
  • Use in foundations or above-grade masonry walls
  • Uniform in shape, color and texture
  • Meets ASTM C 90 specifications
  • Used for mounting or supporting post
  • Note: product availability may vary by store

Specifications

Dimensions

Product Depth (in.)
11.5
Product Height (in.)
8
Product Width (in.)
11.5

Details

Block Type
Block
Color Family
Gray
Compression strength (psi)
1900
Product Weight (lb.)
50lb
Water repellent
No

Warranty / Certifications

Manufacturer Warranty
N/A

Specifications

Dimensions

Product Depth (in.)
11.5
Product Height (in.)
8
Product Width (in.)
11.5

Details

Block Type
Block
Color Family
Gray
Compression strength (psi)
1900
Product Weight (lb.)
50lb
Water repellent
No

Warranty / Certifications

Manufacturer Warranty
N/A

Questions & Answers

How do you keep the concrete from rotting the wood?

How do you keep the concrete from rotting the wood? Concrete wicks water and wood absorbs it.
Asked by: Ron
use pressure treated wood
Answered by: amped1one
Date published: 2017-09-03

can these be used to support a deck?

I have a yard that is very rooty, roots everywhere! Very hard to dig and not get over run by roots. I am looking to build a 8' X 16' deck for my mothers mobile home.
Asked by: trainwreck
Absolutely used as deck support. You just to level the base, no digging in required. a dimensional 4 x 4, which is actually, 3.5 x 3.5, is what fits. I would space them no further than 8 feet apart, depending on your design. Height is not an issue, you just cut posts to your level. I also run a 2 x 4 from under the the joist to the top of the block, to give extra support to the joist.
Answered by: Captain
Date published: 2017-09-30

What size post does this fit?

What size post does this fit?
Asked by: Rere
4x4 i used treated on all of mind
Answered by: Scott
Date published: 2017-08-08

Could you use these to make a fence?

Asked by: Gremlin
As these just set on top of the ground, and a fence has a larger surface area to catch wind, I would not recommend using these to support a fence.
Answered by: legend
Date published: 2017-04-04
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Customer Reviews

11-1/2 in. x 8 in. x 11-1/2 in. Concrete Block is rated 3.6 out of 5 by 14.
Rated 5 out of 5 by from works great, i added to a deck i built 20 years ago, and yes i use them under it back then, and ... works great, i added to a deck i built 20 years ago, and yes i use them under it back then, and there all in good shape
Date published: 2017-08-08
Rated 5 out of 5 by from The base save me a lot of work, that's clever... The base save me a lot of work, that's clever idea
Date published: 2017-05-17
Rated 5 out of 5 by from The units were used as weights for a canvass carport.... The units were used as weights for a canvass carport. They worked as expected.
Date published: 2017-07-27
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-09-13
Rated 5 out of 5 by from for those who cant fit a 4x4 post inside big box stores sell actual 4x4 posts and then they sell the 4x4 like other dimension lumber. I brought my tape measure with me to make sure the 4x4's I bought were actually 3.5 x 3.5 which fit perfectly in these blocks. I think the manufacturer meant the later, or the dimensional 4x4 fits. I built a deck 6x14 and these saved a tone of work and my local code officer approved them in advance as I had asked before making a purchase.
Date published: 2015-07-04
Rated 1 out of 5 by from First of all, I had my wife pick these up assuming they were normal deck piers as this is all the... First of all, I had my wife pick these up assuming they were normal deck piers as this is all they carried. These are not what's pictured in the deck photo to the left of the description. I don't know how you could even use these things. There is no defined bottom for the 4x4 to sit in. Looks like the post would wedge and crack the pier as it's cone shaped after the first couple inches. These are not right. Now I have to return them and go elsewhere.
Date published: 2017-04-07
Rated 5 out of 5 by from Needed additional support footings for a 23 foot tall tree house. They worked great Needed additional support footings for a 23 foot tall tree house. They worked great. It's been 2 years now and they are still set in place, no cracks. Also used them last year building a shed
Date published: 2013-12-03
Rated 1 out of 5 by from DO NOT BUY!!!! I bought 37 of these to finish a pool deck. The blocks I started with were out of stock at another store. This block is specified to receive a 4x4 support post. The first post I tried to install split the block in two. Subsequently EVERY block thereafter had to be chiseled out to receive the 4x4 post. This added days and a great deal of misery to the project.I would NOT recommend this product to anyone unless of course you are trying to hone you chiseling skills.
Date published: 2013-07-14
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