Ergotron 97-101-003 Aluminum Wall Mount Plate: * Strengthens installation by distributing weight over a larger surface area * Compatibility: Ergotron 400, 300, 200, 100 Series, HD Pivots, LX Arm or CPU Holders * 8.38" H x 3.5" W * Adds extra support when attaching an Ergotron arm or pivot to a wall * Aluminum