Electric base adjusts quickly and quietly with the gentle push of a button. Height Range: 27"- 47". Compatible with 24" and 30" deep worksurfaces, custom sizes available. Adjustment Speed: 1.5"/second. Lifting capacity: 150lbs./column. Base Color: Black or silver. Worksurface: nine standard thermally-fused options, high-pressure laminate and custom colors available. Available with worksurface or base only.