The EF series has tough 3/4" thick 7-ply plywood surface with a high pressure laminate. The underside backed with a phenolic sheet to prevent moisture penetration and warping. Edged with a T-molding of 1/8" thick vinyl and fortified with heavy-duty staples to table-top underside. Sturdy, 1 1/16" wishbone legs are 14-gauge massive steel, which is a main reason why this table is one of the most durable tables available. Choose from Grey, Oak or Walnut top colors.