The Bobrick B-518116 is a vinyl-coated folding bathtub seat with a frame constructed of zinc-plated 3/4" steel tubing with white vinyl antibacterial, warm-to-the-touch coating thickness.
The seat is 15" wide by 28" (B-518116x28) or 32" (B-518116x32) in length to rest on the end of the bathtub.