Designed for HX Arms: Upgrade your HX Desk Arm (45-475-216), HX Wall Arm (45-478-216), HX Dual Desk Arm (45-476-216) or HX Dual Wall Arm (45-479-216) to support an ultrawide curved display such as the Samsung Odyssey G9 Compatible with the latest ultrawides: Fits single screens up to 49 inches and 28 to 42 pounds, precisely compensates for 1000R curved monitors with extreme screen depths up to 12 inches Professional grade: Heavy-duty meets peak performance with this well-crafted tilt pivot accessory; designed to promote precise ergonomic positioning for hardcore work or play, increase your immersion with 360 degrees of rotation and 20 degrees of tilt Simple installation: Easily replace the existing HX pivot to support ultrawide displays; includes tilt pivot and attachment hardware; this accessory is included with the HX Monitor Arm with HD Pivot (45-647-216 or 45-647-224) and does not need to be purchased separately Built to last: Extensive quality testing ensures your display stays stable and secure; Ergotron products set the standard for quality with a 10-year warranty and expert technical support