Roller shutters are available in different kinds of materials, e.g. aluminium, stainless steel, plastic and wood. In comparison to other materials, roller shutters made from aluminium or stainless steel offer many advantages. Not only are they more durable and weather-resistant, thanks to their high rigidity, they also provide a much better protection against burglary, i.e. up to resistance class RC 4. Roller shutters made from aluminium or stainless steel are suited for door and window openings up to a width of 5 m. Aluminium roller slats and panels are on offer as roll-formed or extruded variants – roll-formed parts are lightweight, extruded parts are more sturdy.