The PC U-Panel 2600-40-7-U is 40mm thick with seven layers and an overall building width of 605mm. Unique is the reinforced fastener groove whereby the panel in combination with the fastener resists extremely high suction loads. The shape makes it a hybrid of translucent building element and U-Panel. With the system accessories roofing with an excellent insulation value and without unaesthetic shadows from opaque glazing bars can be realized.