Graded C16/24 Timber - 75mm x 200mmC16 strength graded timber that has been regularised to consistent widths for working accurately, kiln dried for extra stability and pressure treated to enhance resistance against rot and insect attack Pressure treated with preservatives to enhance resistance to rot and insect attack Regularised to consistent widths for working more accurately and easy handling Stress graded to C16 specification for structural applications Kiln dried before pressure