Based on this product's specifications, here are some alternatives and similar models
Ergonomic Solutions Base Plate with SP1 200 mm — desk mounting base plate for SP1 arm
Summary description:
Base Plate with SP1 200 mm from Ergonomic Solutions is a desk mounting base plate designed to attach the SP1 monitor/arm system. The 200 mm plate provides a stable connection point for installing an SP1 arm where through-desk or clamp mounting is not possible. Suitable for office or home use to secure and position screens or tablet holders, enabling ergonomic adjustment and stable support.