Lower shelf measures 31 5 W x 16 D with 28 5 40 5 H adjustable height range Includes all hardware and tools required for assembly Bottom shelf measures 28 3 W x 15 8 D x 5 5 H Height of lower and upper shelves adjust simultaneously in 1 increments Durable steel frame with powder coat paint finish Two tiered shelf design with double laminate wood surface Mobile and adjustable for comfort and productivity Overall dimensions of 31 5 W x 29 D x variable height Meets ANSI BIFMA standards Upper shelf measures 31 5 W x 14 D with 34 46 H adjustable height range