"Din-R" Desk extension with cut-out on the left side article DR 468 "Din-R" Desk extension article DR 451 "Din-R" Table extension with cut-out on the right side article DR 471 "Din-R" Table extension with cut-out on the left side article DR 472 "Din-R" Table extension with cut-out on the left side article DR 470 "Din-R" Desk extension article DR 452 "Din-R" Desk extension with cut-out on the left side article DR 474 "Din-R" Desk extension article DR 463