Get a mailbox that fits your needs and is USPS approved to meet STD-4C requirements for new construction and renovations. This unit has 14 tenant doors, all of which are secured with a heavy duty dustproof lock (3 keys included). Even the outgoing mail compartment is designed with security in mind, as it is outfitted with anti-fish comb to let you feel secure. The unit itself is manufactured from tough aluminum with stainless steel hardware. Add in the corrosion resistance, and you have a mailbox that is great for use indoors and out (with kiosk or other application, pending local USPS approval). Get the unit that is perfect for your apartment, residential development, and more. Please contact us for specific unit measurements.