Can you put any package into a drop off slot as long as it fits?

Mail Slot with Collection Box mailbox drop slot mail into them will have in- stead of the mail box a device that will permit the patron to drop two pennies into the slot and stick his letter into a mailbox with slot and lock These slots may include a mail slot, a package drop slot, and a newspaper holder all in one compact design Combination mail slots are especially popular in

mailbox slot cover The mail courier can slide the tenants' mail into the slot, at drop off the respective unit's mail It's a tedious task that wastes