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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
Ergotron HX Desk Monitor Arm - Mounting kit (articulating arm, desk clamp mount, grommet mount, pivot, mounting hardware, extension part) for Monitor - white - screen size: up to 42" - desk-mountable -