ApexDesk AL4628-2M Vortex Series Standing Desk Frame, Base Only, Silver/Black BASE ONLY, PAIR WITH OWN TOP. Height adjustable from 27.5 to 45.5 (without top) Superior stability & sturdy industrial-grade aluminum underframe Memory 6-button controller with anti-collision function The frame itself is 49" wide and 25" front to back. Recommended tabletop sizes 50" - 65" wide.