Catnic Timber Frame Cavity Wall Steel Lintel - CTF7 Benefits: Duplex corrosion protection: Ensures optimum durability and longevity Built-in damp proof course: Sloping outer face and duplex corrosion protection together provide a built-in DPC Product Applications: For 70-85mm Cavity, 102mm Outer Leaf Standard Lengths (mm) 750-1500 1650-1800 1950-2400 2550-3600 3900-4800 SWL (kN) 5 7 7 9 10 Weight (kg/m) 3.4 4.2 4.7 7.3 9.1 Nominal height\'h\' (mm) 145 145 187 261 261 Note: Standard lengths are available in increments of 150mm at lengths up to 3000mm, 300mm at lengths from 3000mm - 4800mm (including 4575 but excluding 4500mm). The SWL (safe working load) is based on the total UDL (uniform distributed load) over maximum span using 150mm end bearings. All timber frame models must be secured with restraint clips (supplied) and a batten (not supplied) to prevent lateral deflection (twist) during the building stage to achieve the loading figures shown. Timber frame lintels should be suitable propped during construction.