The magnum flat fascia system is a clean, flat style which includes the 16mm thick fascia board without a return/leg and a full range of accessories to ensure a neat and professional installation. It is ideal for traditional style buildings with low roofs where rafters are exposed. It can be used without soffit where there is no projection of the roof and the edge of the roofline is flush with the wall. The magnum flat fascia system comes in a wide range of fascia widths. Dimensions Length: 5m. Width: 150mm. Thickness: 16mm. Material: uPVC. Guarantee: 20 years.