Salsbury Industries 4890BLK Classic Mailbox Post, Black 1-sided classic mailbox posts include an 8 1/4" W x 6" D x 3/8" H arm 2-sided classic mailbox posts include two 8 1/4" W x 6" D x 3/8" H arms Feature a durable powder coated finish available in black, green, beige, white and bronze