Brateck Single Monitor Aluminum Slim Mechanical Spring Monitor Arm For Most 17'-32' LUMI’s LDT20-C012 Single Monitor Aluminum Slim Mechanical Spring Monitor Arm comes with Top Fix fitting, which means this type of arm is perfect for limited space underside of the desktop. Its optimizing elbow spring gauge offers the performance and quality needed for weight adjustment. Quick-release VESA plate of exquisite structure and detachable joints make it an ideal support for longer life and easy installation. FEATURES Installs from Top Side: installs entirely from above the desk surface Built-in Spring Tension Gauge: for perfect weight adjustments Quick-Release VESA Plate: for easy installation Smooth Arm Insertion: ensures easy installation Spring-Assisted Mechanism: allows to easily move up and down Two Mounting Options: both desk clamp and grommet are included SPECIFICATION Product Category: Mechanical Spring Monitor Arm Rank: Premium Material: Aluminum,Plastic,Steel Surface Finish: Powder Coating Color: Matte Black Dimensions: 115x561x520mm (4.5'x22.1'x20.5') Fit Screen Size: 17'-32' Fit Curved Monitor: Yes Screen Quantity: 1 Weight Capacity (per screen): 0~8kg (0lbs~17.6lbs) VESA Compatible: 75x75,100x100 Tilt Range: +90°~-90° Swivel Range: +90°~-90° Screen Rotation: +90°~-90° Arm Full Extension: 467mm (18.4') Installation: Grommet,Clamp Suggested Desktop Thickness: Clamp：10~50mm Grommet：10~50mm (Clamp：0.39'~2' Grommet：0.39'~2') Quick Release VESA Plate: Yes Cable Management: Yes