EMA14C12 17"-32" MONITOR SINGLE ARM MECHANICAL SPRING ERGOVIDA EMA14C12Online Stock Only. For "click and collect" orders at Lynbrook store the shipping fee will still apply on collection for items not stocked at the Lynbrook store. Ergovida EMA14 C12 Monitor Single Arm Mechanical Spring Want to have a monitor arm that features smooth and accurate height adjustment? Gas spring arm isn't the only choice you have. Mechanical spring offers you similar functionality at a moreaffordable price. It also allows the design of