What do different drop slots do in the USPS office?

FHC Draft Free Mail Slot 3 x 11-12 mail drop slot Chute or often referred to as a sleeve is attached to each mail drop Shop Categories Division 10 Products · Mailboxes and Storage · Package Drop Boxes mail slot box A: A door mail slot is a small, rectangular opening in the front door through which a mail carrier can deliver mail Its benefits include usability and security

mail box slot Residential mail slots fit snugly into a horizontal slot in your door or outside wall This snug fit provides a weather-resistant flap over the slot that