Ader Plyometric Platform Box- Adjustable 14"-16"-18"-20" Heavy duty steel construction, 2x2 tubing, solid ribbed rubber top, and reinforced 3/4" plywood Four height adjustments: 14", 16", 18", 20" Black scratch-proof powder coating 28" x 29" Base, with 20" x 28" Top NO shipping to Alaska, Hawaii, or APO/FPO addresses or PO Boxes