The Tarmac Hemelite Standard Solid Block (10.4N) is a high-quality construction material commonly used in the building and construction industry. Measuring 140x440x215mm, these lightweight yet robust blocks are produced by Tarmac, a leading brand known for its reliable and durable products. Hemelite blocks are designed to offer superb thermal efficiency and noise reduction. They are perfect for load-bearing walls, both interior and exterior, as well as foundation work.