Ironside Post Mount Mailbox, Black. The Ironside post mount mailbox excels in durability and strength. It's engineered with thick gauge, heavy-duty galvanized steel for maximum fortitude that's impact resistant and virtually indestructible. A sleek powder-coated finish adds shine and fights against rust and other weathering. The door is fastened securely by sturdy piano hinges and features a magnetic latch closure for optimal performance. This large mailbox offers space to easily handle high volumes of mail along with padded envelopes and small packages. Pre-drilled hole patterns on the sides and bottom offer multiple installation points. Mounting hardware is not included.