In response to architects' and planners' requirements for slimmer sight lines along with high static performances and better system security, RP Technik has developed the RP-ISO hermetic 45 mullion / transom facade made of steel profiles.

The system's key features include:
	An elegant sightline of only 45 mm wide double-sided pre-galvanised steel profiles which are available in depths from 45 to 135 mm.
	A wall thickness of 2.5 mm ensuring excellent stability, allowing large spans and large panes weighing up to 400 kg to be used without any additional support.
	A frame U-value of less than 2 W/m²K which complies with Part L of the Building Regulations.
	An efficient ventilation and drainage system through mullions.
	Reached over 1,100 Pascal during testing for driving rain and joint permeability.
	Fire-resistance of 30/0 and 30/30 for vertical curtain walling and roof glazing. The RP-ISO-hermetic 45 system was successfully fire-tested for integrity and insulation up to 30 minutes (EI30/E30). The test was carried out for the applications facade, flat roof and pitched roof. This has been achieved by keeping exactly the same components as the standard facade except for the transom holders.
Benefits to the Customer include:
	Very slim sight line of only 45 mm.
	Greatly reduced profile depths compared to aluminium.
	Larger area of glass / less visible frame
	Frame has an E-modulus treble that of aluminium.
	Easy & unique "100% mechanical" assembly, ensuring the system is both aesthetic and economical.
	No need for welding.
	Painted immediately after processing, requiring no further treatment