Hi, I have hauled horses for over ten years. Mostly thoroughbreds and jumpers. My tralier space is 28 ft. long by 7ft. wide. I have three box stalls 9ft. long divided with ceiling to floor doors, and can put a divder in the back and front stalls to seperate two horses with cross ties and chest bar. The horses face head to head with a box stall in the middle. I always give horses plenty of water and hay; plus rest when I stop to fuel up on those longer day trips. I have an indutrial fan that sucks the hot air out and big windows for vetilation.