Radiata N1 Grade H4 Timber 50 x 50mm SKU: 612028 MODEL: 612028AAAA Sorry, there is currently no online price available for this product.Contact your local store for pricing and availability. Mitre 10 SAvailable at selected stores. Check your local store for details Variants Ideal for many projects around the home. H4 treated for outside construction in contact with the ground, can also be used indoors. Features and benefits N1 Grade Timber. Rough sawn finish. For ground contact.