Contour modular fascia and extract adaption system ? the configurable bathroom ventilation extraction system. The range is designed to be used with in-line fans and accessories ? like the Contour System Fans, Hyper150, Mixflo or Blue Jet fans (sold separately). The Contour System range includes white and black Fascias in round or square, as well as these items with LED light panels that include the SELV LED driver.