Atdec SD-POS-VBM-B2B Dual Back-to-Back Display Accessory with 75x75/100x100 VESA Support for Displays up to 44-Pound, Black Dual Back to Back Display Accessory for the Fixed Height POS Mount SD-POS-VBM that allows attachment of a second screen in a back to back configuration Supports displays weighing up to 44lbs or 20kg with a VESA mounting hole pattern of 75x75mm or 100x100mm Integrated ball-joint that allows for independent tilt/pan and landscape to portrait orientation adjustment. 20 of display adjustment in any direction All mounting hardware included; 10 year warranty