Alternate between sitting and standing. Includes the 3M Precise mousing surface and gel wrist rest with antimicrobial protection. Adjustable mousing surface mounts on either the right or left side. Tilt adjusts +10º to 15º. Height range 10" above to 4" below the mounting surface. Fits corner workstations. 26 1/2"W x 10 5/8"D.