The Imperial Box #0 is a cast-aluminum mailbox with smooth sides and door. It includes one large brass knob, a large hinge, a flag assembly and any necessary hardware. This is one of Imperial’s estate-sized box and the dimension are as follows: BOX 0L Height: 10.75″ x 15″ x 23.25″ BOX 0L Weight: 22.42 lbs. NOTE: This is a Estate–sized box, and it uses a hinge with four holes. If your current box has three holes in the hinge, you have an Standard-sized box. Shop for Standard Boxes here: Imperial Standard Sized Boxes