A first section of a rack includes a first lower wire bend, a second lower wire bend, a first upper wire bend, and a second upper wire bend. The first section also includes a first pivot coupling into which is received a first end of each of the first and second lower wire bends and into which is received a first end of each of the first and second upper wire bends. The first section also includes a second pivot coupling into which is received a second end of each of the first and second lower wire bends and into which is received a second end of each of the first and second upper wire bends.