The Wienerberger Oast Russet Sovereign is a red soft mud waterstruck wirecut brick that is frost resistant. This brick is made from clay which have a high thermal mass and low conductivity and when incorporated into a building it gives it an acoustic insulation. Clay bricks have a long service life, are reusable after use and are highly durable and strong for many builds. Wienerberger was founded in 1819 and is now one of the world's largest producers of bricks. 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.