PUTORSEN 37.4 inch Standing Desk Converter, Height Adjustable Ergonomic Adjustable Sit Stand Desk Converter with 37.2 inch Keyboard Tray and Tablet Slot, BlackSmooth easy lift & Gas spring assisted height adjustment: Gas spring system allows you to adjust your position in seconds easily and comfortably. Control your desk converter with easy to use dual handles. Simply hold the handles on each side and raise or lower your standing desk converter within seconds Ergonomic height range & Reduce eye,neck and back strain: Height adjusts between 4. 3'' to 19. 9'' from the desktop. The height adjustment allows more