Surface area up to 6.25 m² min. width 300 mm max. width 2500 mm
  min. height 300 or 340 mm max. height 2500 mm

Aluminium spacers are used when there is a 27 mm cavity between the panes. Warm edge spacers are used when the cavity is 29 mm. They are made from a mix of aluminium, stainless steel and plastic, which improves the insulation value of the glazing. You can choose between grey and black.