RADIATA UNPRIMED #321 REGENCY ROM LINING BOARD 140 x 12 x 4800mm. Our radiata pine lining boards have been used extensively on a number of architect designed homes. Timber lining is a design feature and a product that allows great architectural freedom. Whether you are trying to achieve a country feel, the old Victorian look, or simply add detail to your eaves or ceiling panels, V-Joint (302) or Regency (321) lining boards will achieve all of this. Available pre primed for a fantastic grade finish or raw for a stain finish, this product serves as a decorative internal lining for residential, commercial and outdoor structures.