2023 grand design imagine aim 15rb grand design imagine aim 15rb travel trailer highlights - murphy bed - booth dinette - full rear bathroom - outdoor griddle explore new destinations with the grand design imagine aim 15rb travel trailer. this single axle travel trailer features azdel composite panels for lightweight construction superior sound absorption and thermal insulation. with four included packages your camping experience is enhanced. the gel coat fiberglass exterior and one-piece roof membrane ensure durability for your adventures. discover the convenience of a walk-in shower....