Full-Length Extrusion & Side Slats: The exterior features full-length interlocking aluminum slats over smooth sheet panels—premium aluminum construction that delivers strength and sleek lines. Stall Capacity: 4 horses, with head-side drop-windows and tail-side drop-windows Hay rack Built with a heavy-duty structure including welded aluminum frames, continuous top rail, thick drop-walls, and marine-grade flooring. (One-piece .040 aluminum roof sheet) Premium Interior for the Horse Area: Features such as rubber-wall mats at hip/head walls, marine-grade aluminum floor sheeting, roof vents per stall, and aluminum breast/butt bars.