This structural panel is hardwood throughout, it is versatile, durable and less prone to bend and twist. Features Manufactured from high quality imported Whitewood (Spruce). Regularised (consistent dimensions) by planing all round with 'eased' (rounded) corners for comfortable handling. CLS finishes 12mm off nominal thickness and 10 to 12mm off nominal width. All of our softwoods are ethically and sustainably sourced from FSC or PEFC certified forests and sawmills. Properties Length: 2.4m. Nominal thickness: 50mm. Nominal width: 75mm. Finish: planed smooth. Grade: CLS. Profile: rounded corners. Treatment colour: green. Kiln dried.