Ergotron LX Series LX Dual Stacking Arm. Mounting: Clamp, Maximum weight capacity: 9.1 kg, Maximum screen size: 101.6 cm (40"), Minimum VESA mount: 75 x 75 mm, Maximum VESA mount: 100 x 100 mm. Height adjustment, Tilt angle range: 5 - 70°. Product colour: White