Semi-Cassette awnings, also known as back bar awnings, allow for multiple fixing points and is the preferred option when mounting to rafter backets or in front of a gutter. The back bar also gives the awning more strength and can generally cover larger areas. Full-Cassette awnings offer complete protection of the fabric when retracted into the headbox but are only suitable in flat mounting situations, such as a brick wall or beam. Your Soltex representative can assist you with awning selection for your unique area.