3 General Planning Guidelines for Mailboxes in New Developments
3-1 Letter Carrier Access to Deliver U.S. Mail
3-2 Mailbox Locks and Keys
3-3 USPS Master Access Lock
3-4 Safety Considerations
3-5 Customer and Carrier Accessibility Considerations
3-5.1 Placement of Outdoor Cluster Boxes
3-5.2 Construction Accessibility Guidelines
