Concrete block has been used throughout the years in many types of structures. There is an almost limitless variety of concrete masonry units. Due to its strength, durability, and excellent fire rating, concrete block provides a long lasting building alternative. Quality Block manufactures a wide range of concrete masonry block. Gray is standard color for Scored Block, Splitface Block, Scored Splitface Block, Sonoran Block and Construction Block. Colors are available through special order unless other wise noted.