The Catnic Internal Wall Box Lintel Standard Duty 1800mm BSD100 is specifically designed to provide structural support over door and window openings in brick or block walls. Manufactured from high-quality galvanised steel, this lintel ensures excellent strength and durability thats crucial in construction. Renowned for its exceptional load-bearing capacity, its a top choice for standard duty internal wall applications. Its designed with a unique box profile to evenly distribute loads, improving the overall structural integrity of the wall.