Trails End Trailers: 2012 Adam 12 foot stock trailer. This is a steel trailer with a wood floor and it is 7 foot tall inside, 6 foot 3 inches wide inside and 12 foot long. The horse area has a street side access door, rubber mats and a rear swing gate with slider. The walls are plywood lined. Recent PA State inspection. 10 ply tires were new in 2015. Email with any questions!