Successive solution in curtain walling systems. Ponzio PF 152HI, as the extension of Ponzio’s solutions of high insulated systems, is the answer to both architects and investors demands. Especially designed brand new insulated input inserted in space between glass panels has replaced the previous solution based on metallized tape. The brand new thermal barrier with it’s new shape and characteristics improves thermal parameters of the whole construction. The composition of used material provides transom with a very good drainage and its shape makes the assembly easy. The assembly of new thermal barrier is possible after glazing. Glass thickness from 38 mm to 56 mm may be applied. Excellent thermal parameters for aluminium profiles can be achieved, such as Uf value equal 0,6 W/m2K, when the glass of 48 mm thickness is applied.