colibyou post mount mailbox extra large postal storage box black galvanized steel heavy colibyou the extra large capacity of this mailbox makes it an online shopper's dream. it's ample profile accommodates multiple padded envelopes, and small- to medium-sized boxes -- keeping them from prying eyes. constructed from rust-resistant galvanized steel, its strength and stability will impress you. a powder-coated gray finish further extends the life of this mailbox. it also comes fully assembled, reducing installation time. dimensions: 24.82in deep x 11.69in wide x 14.98in high