For 200-300mm wall widths, the manufactured length in 150mm increments. For light duty loading, conditions and 215mm solid wall construction. To achieve loading figures, lintel must be built in with block or brickwork. The TJ lintel range is available to suit 250 to 300mm wide walls. Designed for quick construction, the thin joint lintel can be used as two separate lintels when the contractor chooses to build and complete the inner leaf of the building prior to starting the outer leaf.