Auto-Sleeper Corinium was the first model to be built on an AL-KO chassis in the Auto-Sleeper coach-built range the use of the AL-KO chassis provides more room with excellent layouts from the three Auto-Sleeper Corinium models in the range. The Auto-Sleeper Corinium Duo Auto-Sleeper Corinium FB and the Auto-Sleeper Corinium RB. Available with premium pack options that consist of a premium. winter and media pack. Options include the Fiat cab that provides comfort matic transmission with this caters for anyone needing that automatic transmission. Making its impact felt the Auto-Sleeper Corinium range became an instant hit the low profile and excellent designs making all the difference. Many customers believe that the Auto-Sleeper Corinium range is the best Auto-Sleeper yet.