The slat facade, System 624L, from MLL Hamburg, is a facade system made of aluminium with a free ventilation cross section of 62%. The system 624L is equipped with a Z-slat of the medium series of type 020L. Fastening to a facade occurs via the Retaining rail 004. The slats are fastened with the MLL clip system and are also removable afterwards for repair work on on the facade or similar purposes.