SIIG 13-Inch to 24-Inch Dual Monitor Desk Stand (CE-MT1712-S1) Stable desk stand designed for two monitors from 13" to 24" & up to 22 lbs. each (10 kg) Multiple monitors on single base frees up valuable desk workspace Supports tilt angles of +/-15o (up & down), +/-15o swivel (left & right) and 360o rotation (portrait & landscape) for easy adjustment of viewing angle Adjust monitor support arm height from 9" to 18.5" (228mm to 470mm) & fine-tune individual monitor height +/- 0.15" (+/- 4mm) for proper alignment Supports portrait or landscape monitor orientations Compatible with VESA mounting 50x50mm, 75x75mm and 100x100mm patterns Solid table-top base for use on any solid/flat surface Through-hole/grommet mounting is compatible with surface holes 3/8" to 2.5" (10mm to 63mm) wide and up to 2.5" (63mm) thick