Cessna Citation Jet 1+ is a turbofan-powered light corporate jet built by Cessna and developed as an improved version of the Citation CJ1.The cabin volume for the Citation CJ1+ has typical configuration features 7 passenger and 1 crew seat. 

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Overall cabin length :  3.35 m  / 11 ft   

Cabin height :  1.24 m  / 4 ft 8 In 

Cabin width :  1.24 m / 4 ft 9 In

Luggage Volume : 45 cu ft

Passenger capacity :  5