The Catnic® CX90 Cavity Wall Open Back Lintel Extra Heavy Duty 3000mm is a high-quality construction product designed for supporting cavity walls. This lintel is perfect for heavy-duty applications, made with robust steel to ensure superior strength and durability. Its open back design allows for the insertion of insulation, promoting energy efficiency. The Catnic® CX90 also provides resistance to corrosion due to its galvanised finish, making it ideal for longevity in construction projects.