For Sale: Travel Trailers / Thornburg, Va 2015 Keystone Rv Premier 22rbpr In The Rapidly Growing Ultra-lite Field, The Premier Has Carved Out A Distinctly New Segment. Premier Offers Luxury, Progressive Styling, And High Impact Features All At A Weight And Price Never Seen Before. Breakthrough Features Like A Vaulted Ceiling, Max-depth Slide Room Technology, Dual-radius Gel-coat Fiberglass Front Cap, Smooth Profile, Frame-less Exterior Windows And Upgraded Graphics Set Premier Apart From The Crowd.