Product details:

Made of die cast aluminum. Column mailboxes overall dimensions are 11-1/4'' W x 13-1/4'' H x 15-3/4" D. Rough opening dimensions are 10-3/4'' W x 12-1/2'' H x 15-1/4" D. Include a 10" W x 2-1/2" H solid brass mail flap with the word "MAIL" cast into it.