For an increase in burglary protection, dry walls, ceilings and floors are often planked with sheet steel. This method causes, particularly in dry construction, air circulation problems. These problems can be solved by the application of our expanded metal lath Securilath. Flat-rolled or structured expanded metal with a thickness of up to 3.0 mm can be applied and provides effective penetration protection without influencing the air circulation. It can be combined as desired with other materials and offers a 2/3 saving in weight compared to solid metal.