This computer monitor stand has 2 adjustable heights: (3 2/5'' and 6 4/5'') Ergonomic design. When used side by side, the height is 3 2/5'', which can accommodate two monitors. When stacked up and down, it is a 2-tier monitor lifter with a height of 6 4/5'' and fixed with wooden pins to avoid shaking, simple, modern design, can be easily integrated into most home office decorations