HUANUO Vertical Dual Monitor Mount, Stacked Monitor Stand for 2 Monitors with Height Adjustment Computer Monitor Arm Supports Two 17 to 32 Inch with C Clamp Each Desk Mount Hold up to 17.6lbs

Dual Monitor Stand - Vertical Stack Screen Free-Standing Monitor Riser Fits Two 13 to 34 Inch Screen with Swivel, Tilt, Height Adjustable, Holds One (1) Screen Up to 44Lbs

HEMUDU Dual Monitor Articulating Desk Mount Arm Stand - Vertical Stack Screen Supports Two 13 to 34 Inch Computer Monitors with C Clamp