... aluminium color 3,door width: 500mm-2300mm 4,door weight: 20-90 1, Item name: Concealed Door closer2, Item number: VW-DC-K693, ... Type: concealed door closer4, Material: Aluminium5, Body shape: ... speed adjustment degree: 15°C - 0°C15, Available door : wooden door, aluminum door, stainless steel door16, Item pictures in details:17, ...