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 Due to the Covid-19 pandemic, brick manufacturers have seen a surge in demand which has led to stock shortages and extended lead times. The price set against the product is based on them being in stock and delivered out of selected depots. We will always try to make sure that our customers' orders are fulfilled, but in the event we cannot supply the bricks within our selected network we will offer an alternative solution where possible.