What is a USPS-Approved Vertical Mailbox?
Vertical mailboxes are wall-mounted units designed for condominiums, townhouses, and commercial properties requiring centralized mail delivery. Unlike horizontal cluster boxes, vertical configurations stack compartments in a tall, narrow format to maximize space efficiency while meeting USPS requirements.
These units work best in covered areas like building lobbies, mail rooms, or covered exterior alcoves. Property managers choose vertical mailboxes when floor space is limited but wall space is available, making them ideal for urban multi-unit buildings and commercial properties.
Installation Options
Recessed vertical mailboxes mount flush into the wall cavity, providing a clean, integrated appearance ideal for new construction. Surface mount units attach directly to existing wall surfaces without requiring modifications, perfect for retrofit projects in existing buildings.
Popular Configurations
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8-12 compartments for smaller condos
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12-16 compartments for townhouse developments
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16+ compartments for larger commercial properties
All vertical mailboxes must meet USPS STD-4C specifications including approved locks and proper compartment sizing for centralized mail service.
