Tall Monitor Arm Desk Mount - ULTRARM premium heavy duty arm mount with built-in pnuematic spring system for perfect weight adjustment, clear cable management, and a quick-release VESA plate for simple monitor installation. Fits Ultra Wide Monitors - Holds one screen weighing up to 44 lbs. Fits ultrawide monitors up to 57" and downward compatible 49" to 24" flat, curved up to 1000R screens. The quick-release VESA bracket has 75x75mm and 100x100mm mounting capability. Fully Adjustable Monitor Arm - Vertical monitor mount offers flexible motion featuring +25 to -25 degrees tilt, 180 degrees swivel, 180 degrees rotating monitor, and 13 inches of smooth height adjustment with gas spring lift. Sturdy Mounting Options - The c-clamp provides excellent support, and an equally secure grommet mount is provided to accommodate a variety of desk layouts. Recommended desktop thickness ranges from 0.6 to 3.3 with clamp and 0.6 to 1.9 with grommet. Modular Extension Arms - The b