New 2026 Forest River Cascade 18PB Travel Trailer The 2026 Forest River Cascade 18PB is a new, lightweight travel trailer model from Forest River RV, known for its compact size, ample storage, and features like a rear bath and power awning. It has a dry weight of approximately (4,469) pounds, a length of about (23^{\prime }10^{\prime \prime }), and can sleep up to six people.