Catnic Heavy Duty External Solid Wall Steel Lintel - CN81C 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) 2100-2700 2850-3300 3600 3900-4575 4800 SWL (kN) 54 47 39 29 26 Weight (kg/m) 18.5 18.5 18.5 18.5 18.5 Nominal height\'h\' (mm) 219 219 219 219 219 Note: Standard lengths are available in increments of 150mm at lengths up to 3000mm, 300mm at lengths from 3000mm - 4800mm (including 4575mm, but excluding 4500mm). 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.