Image Item No. Description By  x986  Duplo Door / Window Frame 2 x 4 x 3 Flat Front Surface without Clips Catalog: Parts: DUPLO, Building 7  x978  Duplo Door / Window Frame 2 x 4 x 3 Half Door Catalog: Parts: DUPLO, Building 21  x978c01 (Inv)  Duplo Door / Window Frame 2 x 4 x 3 Half Door with (Same Color) Duplo Door 1 x 4 x 1 (x978 / x979) Catalog: Parts: DUPLO, Building 4  x979  Duplo Door 1 x 4 x 1 Catalog: Parts: DUPLO, Building 17  x979pb01  Duplo Door 1 x 4 x 1 with Yellow POLICE Pattern Catalog: Parts: DUPLO, Building 14