This 100mm x 47mm (4" x 2") Sawn Treated Easi Edge Timber is made from quality machined, kiln dried, C16 strength graded timber. This 2.4m sawn treated timber has been smoothed with eased edges for safe, splinter-free handling, and has also been pressure treated with preservative chemicals to protect against rot, splitting, damp, insects and fungi. This 4" x 2" treated timber is FSC certified, meaning it's responsibly sourced from sustainable forests. It is C16 stress graded for structural applications and kiln dried to reduce moisture content and help improve stability.