Catnic Standard Duty External Solid Wall Steel Lintel - CN81B Benefits: Duplex corrosion protection: Ensures optimum durability and longevity Box profile: Resists twisting during construction Instant full load use: Box profile is designed to carry full load of wet masonry as soon as it is installed Product Applications: For 200mm and 215mm Exterior Solid Walls Standard Lengths (mm) 2100-3600 SWL (kN) 29 Weight (kg/m) 15.1 Nominal height\'h\' (mm) 219 Note: The SWL (safe working load) is based on the total UDL (uniform distributed load) over maximum span using 150mm end bearings. For solid wall construction in excess of 250mm an appropriate Open Back Lintel can be utilised, contact Catnic Technical Services for details. CN71 and CN81 lintels can also be used as heavy duty wall eaves lintels for 70mm to 100mm cavities.