Heavy Duty 1 1/2" 14 GA Sq. Steel Tube Construction Top: 3/4" CD Plywood base with 1/2" US Made Non Toxic Non Skid Rubber Extended Base on Two Sides to reduce Tipping End Caps on four corners of base to prevent markings on floors 18"H - Top 20" X 20" - 20"W X 26.5"L - 45 lbs