Ergotron LX Dual Stacking Arm Tall Pole - Desk mount for 2 LCD displays - aluminium - white - screen size: up to 40" : Amazon.co.uk: Electronics & Photo
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Ergotron HX Dual Monitor Desk Mount White 29.2 cm Lifting Capacity up to 81.3 cm Inches 2.3 mm – 7.9 kg VESA 75 x 75 100 x 100 mm : Amazon.co.uk: Computers & Accessories