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- Designed for installing and anchoring posts
- Simple and easy installation
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Product Details
About This Product
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.
Highlights
- 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
- Return Policy
Product Information
Specifications
Dimensions: H 8 in, W 11.5 in, D 11.50 in
Dimensions
Product Depth (in.) | 11.50 in |
|---|---|
Product Height (in.) | 8 in |
Product Width (in.) | 11.5 in |
Details
Block Type | Deck Block |
|---|---|
Color Family | Gray |
Compression Strength (psi) | 1900 psi |
Material | Concrete |
Product Weight (lb.) | 50 lb |
Warranty / Certifications
Manufacturer Warranty | N/A |
|---|
Questions & Answers
How do I insert 4x4 post into the 11.5 in. x 8 in. x 11-1/2 in. Concrete Deck Block
I need to tie down the post into this, gravity alone is not enough-so what size is the hole in the center? thinking of using a wedge anchor to attach a post bracket if it will fit.
Hi Amiee, thank you for your question. The center opening in the 11.5 in. x 8 in. x 11.5 in. Concrete Deck Block is approximately 3.5 in. wide by 3.5 in. deep, designed to accommodate a nominal 4x4 post (actual size approximately 3.5 in. x 3.5 in.). These blocks are intended to support posts through the opening and are not designed to be drilled or used with wedge anchors and post brackets. If your application requires a mechanically anchored connection, we recommend consulting your project plans and local building requirements to determine the appropriate foundation system. We hope this helps with your project!
Can it fit a 6x6 post ?
Hi Reno, thank you for your question. No, a standard 6x6 post will not fit in the post pocket of the 11.5 in. x 8 in. x 11.5 in. Concrete Deck Block. The deck block is designed to accommodate a nominal 4x4 post (actual dimensions approximately 3.5 in. x 3.5 in.). A nominal 6x6 post has actual dimensions of approximately 5.5 in. x 5.5 in., which is too large for the molded post opening. We hope this helps with your project!
Do they make a concrete footer tat is 6 x 6 vs 4x4
Peter, yes, concrete deck blocks are available to accommodate 6 in. x 6 in. posts, but they are less common than standard 4x4 versions. You’ll need to look specifically for a 6x6 deck block or pier block with a larger notch or saddle, as a 4x4 block will not properly fit a 6x6 post without modification.
What size post fits in this size block
That size concrete deck block is designed to fit a standard 4×4 post (about 3.5" x 3.5" actual size) i
How much weight do they hold
Robert, this concrete deck block is not rated for a specific maximum load by itself, as its capacity depends on the overall deck design, soil conditions, and how the load is distributed; however, when properly installed on a stable, level base and used as part of a correctly designed deck system, it is intended to support typical residential deck loads, with each block commonly handling several hundred pounds or more as part of the structure rather than as a standalone load-bearing unit.
Do this take true 4x4 post
Sam1, this concrete deck block is designed to accommodate a standard nominal 4x4 post (which measures approximately 3.5 in. x 3.5 in.), but it is not intended for a full “true” 4 in. x 4 in. post, so proper fit and stability are achieved when using standard dimensional lumber commonly available for deck construction.
Do they hold 6”x6” pressure treated wood or just 4”x4”
George - this deck block is manufactured to accept standard 4×4 posts; a 6×6 post will not properly fit the molded opening, so additional modification or a different block style designed for 6×6 posts would be required
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