Landover universal mailbox post is constructed of reinforced extruded aluminum and steel to resist rust and provide an extended service life. the decorative aluminum post and finial, with a steel cross arm, features a unique and stylish design that will enhance the curb appeal of any property. the landover will accommodate any standard, large or extra-large mailbox. this post comes complete with a universal mounting bracket and mounting hardware, fashioned with a hollow stem to slide over a 4 in. x 4 in. wood post (sold separately) for quick, hassle-free installation.