Radiata Premium Grade Griptread Decking 90 x 32mm SKU: 635410 Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Pine decking is a popular option that also provides a classic, quality look. These boards are of a premium grade. Features and benefits H3.2 treated Radiata. Griptread. Easy to stain. A New Zealand grown renewable resource.