Ergotron's unique Constant Force technology provides a versatile monitor arm without the aging degradation seen in gas spring models. Lifting the monitor frees up desk space. It folds compactly when not in use, further saving space. Supports monitors up to 34 inches and weighing 3.2kg to 11.3kg, VESA 100x100mm and 75x75mm compatible. The clamp can attach to surfaces up to 60mm thick, and the grommet mount fits holes with a diameter of 8-50mm and a thickness up to 57mm. It will be disassembled for shipping, but instructions will be included.