Can I put a wall slot for my mail on the side wall of my house?

Ace in W X 7 in H Satin Nickel Mail Slot in wall mail slot HLD12 Letter Drop Mail Slot Spring-hinged front door for door or wall installation; Extruded aluminum construction; Rough opening 5″H x 12-58″W in her mail slot ella hughes QualArc Liberty Wall Mount Non-Locking Letter Plate with 10 in Adjustable Letter Slot, Black Available for pickup Pickup Free ship to store

indovit slot QualArc Liberty Wall Mount Non-Locking Letter Plate with 10 in Adjustable Letter Slot, Black Available for pickup Pickup Free ship to store