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

Vertical Through the Wall Mail Drop Slot Item # CBDVTW mailbox slot in wall mail slot for apartment 3B Climbing to the third floor, Littlemore rang the bell Mrs Cross stood behind him “Who it is?” called a Spanish-accented voice mailbox slot cover The fully-insulated mailbox system for installation in the door side has flush-mounted, recessed Avantgarde mail slot flaps with finger recess for easy opening

mailbox with slot and lock The mail slot and lock are protected under the flap, enhancing the beauty and weather protection Simple on-wall installation Deposit and removal of mail