Naiture Steel Home Locking Wall Mount Mailbox Black Powder Coat Finish Mailbox made of corrosion-resistant, galvanized steel with a powder coat finish. Overall dimensions: 12-1/4" W x 4" D (front to back) x 15-1/4" H ( 1/2"). Slot dimensions: 8-5/8" W x 1" H. Finish: Black Powder Coat Customizable label on front.Four pre-drilled mounting holes with rubber spacers on backplate. Chrome lock with two keys supplied.Hardware included.