-Products code; F-FSB Safe working load; Not Applicable, decorative knee brace only Brace; ex 75mm x 75mm. 600mm length and angles cut to set at 45 degrees. Stop bevel/chamfer to all four corners. Timber; European Vth Redwood. All product codes Prefixed with F are certified FSC mix 70% INT-COC-003944.274. Prices quoted are for single items not per pair. Excludes delivery costs. Delivery normally 2 working days. The safe working load is calculated with a safety factor of 6. Calculations to find the load should be obtained to prove suitability of the product for your application. Our Timber products are inspected for faults, dead knots and shakes are filled using a two-part resin filler. All our timber products are now treated with an industrial wood preservative as defined in BS/EN 335-1:1994. The product protects the wood surface against wood destroying and wood discolouring fungi and satisfies the performance requirements of EN599-1. This allows the product to be stained/painted on site.