This 48 Inch single post square picnic table has a vandal-resistant design. Center post is made of 6 inch square tube which makes this unit extra heavy-duty. The seat arms are 3 1/2 inch O.D. pipe. The entire frame is hot-dip Galvanized after fabrication for long life. In-ground is standard on single post tables. It Extends approximately 20 inch into a concrete poured base.