2009 Sierra RVs 345RET 345 RET Sierra offers the recreational vehicle family a great line up of quality-built travel trailers and fifth wheels. the professionally designed and appointed interiors give Sierra a warmth and character found only in more expensive counterparts. You'll discover a wide range of options and floor plans that will personalize your RV and help you create an atmosphere that appeals to you and your family. Fifth Wheels Fifth Wheels 7407 PSN ...