The long and short of it is this: People are built differently and work differently. Details Height-AdjusTable Worksurfaces transform to meet seated and standing needs of everyone from 5'  to 6'4". Available in sizes, shapes and laminate colors to meet every need.
Features Series 5 & 7 Series 5 24.5" to 51.5" electric height adjustability range Infinite height adjustments within the range Low surge electric motor with whisper quiet operation, adjusts @ 1.7" per second Built in trough for wire and cable management (vertical wire management is available) 2 1/2" diameter glides have 1" of glide adjustment for surface leveling on uneven floors Lifting columns controlled by "master" and "slave" drives 220 lb. dynamic load-bearing capacity per table Variety of top shapes and sizes External dc motor Flush mounted worksurface bracing (for two-piece tops) More than just a worksurface; add the right work tools and it becomes a fully adjustable workstation All assemblies meet or exceed ANSI/BIFMA standards Series 7 24.25" to 52" electric height adjustability range (assumes 1" glide adjustment) Infinite height adjustments within the range Three pre-set position options Low surge electric motor with whisper quiet operation, adjusts @ 1.7" per second Built-in trough for wire and cable management (vertical wire management is available) 2 1/2" diameter glides have 1" of glide adjustment for surface leveling on uneven floors Lifting column controlled by central box for synchronization 150 lbs. dynamic load-bearing capacity per lift column - no magnetic interference with a CRT monitor on the worksurface Wide variety of top shapes and sizes Soft stop motor eliminates abrupt starts and stops Built-in limiter switches Flush mounted worksurface bracing (for two-piece tops) More than just a worksurface; add the right work tools and it becomes a fully adjustable workstation All assemblies meet or exceed ANSI/BIFMA standards