Prefect Office PartnerThese 2 classic white stand can meet your 3 needs one time: Raise 2 monitors/laptops/printers/game boxs Relieve fatigue Increase storage space. ^^ 2 Height Adjustable [3 3/8 & 6 3/4] Ergonomic design. When used side by side, the height is 3 3/8, which can place two monitors. When stacked up and down, be a 2 tier monitor riser which height is 6 3/4, and it is fixed with wooden pins avoid shaking. ^^ Sturdy and High Quality It can hold 80Ibs, strong and sturdy. Made of high quality MDF wood board. Minimal, modern design that fits in easily with most home office decor. ^^ Size & Easy Assemble Single use [1/single stand] 14 x 9 1/2 x 3 3/8; [2/combination] 14 x 9 1/2 x 6 3/4 It can be used alone or in combination. ^^ 100% after-sale guarantee, buy with confidence. This is a great gift for birthdays, anniversaries of family, friends and Colleagues.