Radiata N1 Grade H3.2 Timber 50 x 50mm SKU: 611428 MODEL: 611428AAAA Mitre 10 MSAvailable at Mitre 10 MEGA and selected Mitre 10 stores. Variants Ideal for many projects around the home, commonly used for light framing. Features and benefits H3.2 treated Radiata. N1 grade timber. Machine gauged for ease of handling. Wet. For above ground external use.