The new Belgard Tandem retaining wall system changes the mindset that retaining wall blocks have to be big, heavy (and often unattractive) blocks. Instead the Tandem wall uses hollow-core blocks that are filled with gravel to provide the weight and integrity the wall needs, but enables Belgard to manufacture the smaller block “faces” in the same manner that they do traditional pavers, allowing for a much more detailed texture than traditional retaining wall block.
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