https://www.keystonervsource.com/spe...1496?year=2018
Welcome to the site. No one can tell you specifically as the RKS is not the full model; they have two rear kitchen bumper pull campers listed with the RKS label. Suggest you find yours on the floor plan page I posted and figure the actual box is a couple feet shorter; I am not sure how long the A hitch thing is. You would want to cover it as well I would surmise so just look at the lengths on the Keystone link and get your cover making materials for a couple feet longer. If the camper is 30' specified, I would guess 35' would be about right and you will probably make a determination based on the distance between upright supports.