Open Back Cougar Lintels are designed for Cavity Wall construction, offering built-in insulation, plaster key, and DPC. They ensure uniform distribution of masonry, timber floor, and roof loads, and are suitable for fair-faced inner leaf masonry. Features include duplex corrosion protection, built-in DPC, integral plaster key, and integral insulation. Formed from galvanised steel and powder coated, these lintels are easy to use with their open back profile and continuous insulation. Standard lengths are available in 150mm increments up to 3000mm, and 300mm increments for lengths between 3000mm and 3600mm. The Catnic CG90/100 100mm Cavity Wall Lintel is specifically engineered for cavity walls with widths between 90mm and 105mm. It supports inner leaves of 100–115mm and outer leaves of 100–102mm, making it ideal for standard duty applications in domestic and light commercial structures. Lengths range from 750mm to 3600mm, with unit weights varying from 4,590g to 47,230g. Key features include galvanised steel construction for corrosion resistance, designed for 90–105mm cavity walls, and supporting specific inner and outer leaf dimensions. It is suitable for standard duty load-bearing applications. For optimal load distribution and stability, a minimum of 150mm end bearing is recommended on both sides. The design allows for simultaneous elevation of both inner and outer leaves, simplifying installation. A block course is required before installing flooring or roof elements for enhanced structural performance.