Refurbishing a Mail Slot and Doobell

Adjustable Through wall Mail Chute: 5 to 12 wall through wall mail slot chute through-the-wall-letter-drop-slot-with-chute USPS through the wall mail slot These videos cover the most common Because wall installations are more complicated and each is completely different there is no “Wall Installation” video

through wall mail slot My new home exterior mailbox slot is great but the wall interior is not appealing How can I frame this 6 x 9 square hole in my wall?