BBJ has the lower pressure kit installed. 1,981 m=ters. The New Boein= 787 is 1,828 meters. The Gulfstream G650ER cabin is less than 1,239 meters. The Gulfstream G650ER has the lowest cabin of all =ets. Almost half the cabin altitude of most airliners. <=iv> Information below comes from the Gulfstream web site.<=fo