Material options steel, stainless steel Performance specifications* fire resistance EI30-EI90, E30/EW30, E60/EW60, E90) corner building in class EI30 and EI60 burglary resistance RC2-3 bullet resistance FB4 [...] or enamelled individual profile design ans surface treatment trouble-free assembly using mechanical T-joints Variants for applications without safety applications: forster thermfix vario Hi sloped glazings