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Fort Decking 12-Inch Deck Blocks for Posts, Fits 4x4, 2x4, 2x6 2x8 and 2x10 Joists and Beams, Pack of 12, Black

  • Based on 13 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Sep 18
Order within 12 hours and 14 minutes
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Size Name: 12 Pack


Features

  • Sturdy foundation for various decking and home improvement projects.
  • Versatile, ideal for low, raised and multi-level decks, as well as pathways and sheds, made to enhance your outdoor living spaces.
  • Designed to accommodate 4x4 posts, 2x4, 2x6, 2x8 and 2x10 joists and beams, offering flexible construction options.
  • Robust and very stable with it's circular design each bloc is capable of bearing up to 1400 lb. of weight, providing a very reliable structure. Comes with a 25-year warranty.
  • Feather-Light design weighing just 1.2 lb., our deck blocks offer effortless handling and installation, minimizing labor intensity.

Description

Sturdy floating foundation deck blocks made from high density plastic. Designed to accommodate 4x4 posts, 2x4, 2x6, 2x8 and 2x10 joists and beams

Material: Plastic


Brand: Fort Decking Systems


Color: Black


Shape: Rectangular Prism


Item Form: Sheet


UPC: ‎775110903205


Manufacturer: ‎Fort Decking Ststems


Part Number: ‎FDB-4X2 - 12 PK


Item Weight: ‎16.81 pounds


Package Dimensions: ‎21.2 x 21.2 x 10.2 inches


Item model number: ‎FDB-4X2 -12 PK-FBA


Size: ‎12 Pack


Item Package Quantity: ‎1


Date First Available: April 20, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • marvels of modern plastics….
Size Name: 4 Pack
One of the stumbling blocks I’ve always experienced at the prospect of building some structure outside is the foundation. So much of my land is too rocky, sloped, muddy… digging and establishing a foundation has always stopped me in my tracks. But now: for something simple like a deck or small shed? Lay down some crushed gravel, using these to hold the support beams in place? I no longer have that obstacle. And to think: small, thin pieces of plastic that not only can hold and bear significant loads compared to their side, but also promise to last decades! That’s pretty amazing. I’m building an all-season gazebo (at least, meant to stand through all four seasons, whether or not I’m actively using it) to replace a 2.5 season cloth canopy. Essentially a deck with a light roof over it. I am using these to provide the foundation support- building the ground-level deck that I will then build atop. I’ve been eyeing these for a while, and I’m glad I finally took the time to investigate. ... show more
Reviewed in the United States on September 1, 2024 by Matthew

  • Don’t forget a rubber mallet
Size Name: 12 Pack
Plastic is a little crooked, so place in sun to warm up, then use rubber mallet to knock in place. Other than that, it works as it should
Reviewed in the United States on July 22, 2024 by Catherine

  • Lightweight support
Size Name: 4 Pack
My back appreciates these. My delivery driver's back probably does too. These are a great alternative to the concrete version. We're using them for a small fort for my kids. So far they're easy to work with. They're compatible with 2-by boards and 4x4 posts.
Reviewed in the United States on September 1, 2024 by Dave in NJ

  • A DIY'ers Dream!
Size Name: 4 Pack
If you want to build a floating deck, these Fort Decking Foundation Deck Blocks are a great product to DIY the project! The hardest part of building anything is making it square, and these "beam holders" allow you to line up your wood perfectly without a bunch of additional squaring up tools. They provide a large solid base for your posts if you're going vertical. A rubber mallet would work great to pound these in, But if you don't have one, and you're desperate to get a deck up, some padding over the wood and a regular hammer or heavy tool would work. I think these blocks will save you hours and hours of squaring up and double checking. They feel super heavy duty as well and I love that no wood will be touching the wet ground and rotting where I can't see it. These make a big project simple, like an adult Lincoln log or Lego project. Great solution. ... show more
Reviewed in the United States on August 8, 2024 by sandraB

  • Same price as concrete blocks, by lighter and more sturdy
Size Name: 4 Pack
I'm building a low height deck on an existing patio and first found these when looking for something lower than the standard heavy concrete blocks. These are roughly the same cost, but so much lighter and lower to the ground while actually offering more vertical support for the 4x4 post. Laying them out and adjusting is a breeze since they are so light. Absolutely recommend. ... show more
Reviewed in the United States on August 14, 2024 by Aaron Smith

  • Thick material, seem robust
Size Name: 4 Pack
These do seem to be heavy duty enough to support specified lumber and loads. I'll try them out but my concern is how they might hold up to freezing moisture in colder climates and if that might crack them? Too soon to tell.
Reviewed in the United States on September 4, 2024 by bravocharleywindsor

  • Great for level surfaces
Size Name: 4 Pack
These are very similar to the more expensive tough blocks that I have seen advertised at the big box stores. They will hold a 4 x 4 post or any 2 x 4 or 2 x 6 2 x 8 etc. You will have to level the ground in order to use these as they are not meant for unlevel terrain. Simple to use an inexpensive considering you don’t have to lug a bunch of heavy concrete bases around. ... show more
Reviewed in the United States on August 15, 2024 by Kristi Martin

  • Deck blocks
Size Name: 4 Pack
If you have level ground these are a time and back saver. They are light and easy and to move. They are a bit pricey but no heavy bases to carry around. Will fit 4x4 or 2 by no problem
Reviewed in the United States on August 14, 2024 by Ernest

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