This 9-door 4C Standard Mailbox unit is constructed of heavy gauge aluminum with stainless steel components for maximum security and durability both indoors and out with an included shelter. This lockable mailbox unit also includes one parcel locker for delivery and storage of larger parcels. The corrosion-resistant, weatherproof powdercoat finish protects this high-security unit from the elements, while the riveted shelves and concealed hinges limit pry points for added security. The Mail Carrier access door provides easy access for Postal Letter Carriers to release the master loading doors. Each tenant door meets the new compartment minimum size requirement of 3"H x 12"W x 15"D, while the unit as a whole meets the USPS requirement for 1:10 parcel locker to tenant compartment ratio, and the USPS 4C requirements which comply with ADA standards.