Green Star - Office Interiors compliant product,Improves ergonomics of any work place,Freestanding unit, can be placed anywhere and moved around easily,All 4 monitors can be adjusted independently using the QuickShift mechanism,All mounting hardware included,Maximum supported weight, per display 12kg,VESA mounting hole pattern 75x75 / 100x100,Maximum allowed display width 635mm,Maximum allowed display height 450mm,10 Year warranty