Our inground 60″ B mailbox post features a modern and sleek design. Offered in black powder-coated stainless steel, it has a plate-welded mount. This model is to set 18″ in ground (in concrete preferably). Size: 60” x 2” x 2”. Looking for a stainless-steel mailbox post? Check out the 60 S. All of Vson’s timeless mailbox posts are made with expert craftsmanship and durability to last a lifetime.