Easily transition from sitting to standing with gas spring height adjustment. Flexible set up; spacious top platform holds two monitors or a monitor and laptop and the bottom level perfectly holds a keyboard and mouse. Keep your phone or other accessories within reach with the convenient device channel on top platform. Arrives fully assembled - no complicated instructions, no mounting; just unpack and get started. Work comfortably sitting or standing with 15.5" of adjustment range. Compatible with Fellowes Lotus Monitor Single (8042801) and Dual (8042901) Monitor Arm Kit.