Image Item No. Description  61649  Duplo Door / Window Frame 2 x 4 x 3 Flat Front Surface, Completely Open Back Catalog: Parts: DUPLO, Building  16598  Duplo Door / Window Pane 1 x 4 x 3 Curved Front with Rounded Pane Catalog: Parts: DUPLO, Building  53510  Duplo Door / Window Pane 1 x 4 x 3 with Single Pane Catalog: Parts: DUPLO, Building  31023  Duplo Door / Window Pane 1 x 4 x 4 with 4 Different Size Panes and Curved Top Catalog: Parts: DUPLO, Building  31171  Duplo Door / Window Pane 1 x 4 x 4 with 9 Panes Catalog: Parts: DUPLO, Building  51695  Duplo Wall 1 x 8 x 6 Hinge on Left with Door Opening - Castle Catalog: Parts: DUPLO, Building  51697  Duplo Wall 1 x 8 x 6 Hinge on Right with Window Opening - Castle Catalog: Parts: DUPLO, Building