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The Coursing Units are made of the same material as all H+H aircrete and can be used in the same ways as regular-sized Celcon Blocks, ensuring consistency throughout the structure. Both internally and externally, in load-bearing and non-load-bearing environments, they are appropriate for usage.The only masonry unit used in the construction of load-bearing walls should not be a coursing unit. PLEASE NOTE: The image is for representative purposes only, if unsure please order a sample