Adjustable monitor stand with nonskid base is designed for laptops, monitors and printers. Stacking columns raise the machine and allow storage space underneath to maximize desk space. Width between platform columns is 11. Monitor stand supports up to 21" or 80 lb. and is adjustable in three height increments with over 4-3/4" of height adjustment in 1-5/8" increments"Maximum Adjustable Stand Height: 5.88Maximum Screen Size Supported: 21"Maximum Load Capacity: 80 lbFeatures: Adjustable HeightFeatures: ErgonomicFeatures: StackableFeatures: Non-skid FeetColor: BlackColor: SilverMaterial: PolystyreneForm Factor: FreestandingWeight (Approximate): 1 ozCountry of Origin: TaiwanLimited Warranty: 30 Day Lifetime"