Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 2230 Duplo Door / Window / Mailbox Raised this part is a print of it
• 11345 Duplo Building Door Frame 4 x 4 x 3 this part is a pair of it
• 18857 Duplo Door / Window Frame 4 x 4 x 3 with Thin Top this part is a pair of it
• 2231 Duplo Mailbox Flap for Mailbox 2230 this part is a pair of it
• 2332 Duplo Door / Window Frame with Raised Door Outline this part is a pair of it
• 2332b Duplo Door / Window Frame with Raised Door Outline, Completely Open Back this part is a pair of it
• 27396 Duplo Roof Section 4 x 4 x 3 with Window this part is a pair of it
• 29307 Duplo Door Frame with Wide Sloped Base 2 x 8 this part is a pair of it
• 4253 Duplo Door / Window Frame Flat Front Surface this part is a pair of it
• 61649 Duplo Door / Window Frame Flat Front Surface, Completely Open Back this part is a pair of it