Our inground 60″ marine grade stainless steel post features a modern and sleek design. Offered in full stainless steel 316L, it has a better rust resistance than stainless steel 304 and 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 black mailbox post? Check out the 60 B. All of Vsons’s timeless mailbox posts are made with expert craftsmanship and durability to last a lifetime.