Satin-finish stainless steel. Mounts centered through toilet partitions, 1⁄2–2" (12–50mm) thick; used from both sides. Holds four standard core toilet tissue rolls up to 5 1⁄8" (130mm) diameter; two for each side. Chrome-plated plastic spindles with heavy-duty internal springs. Rough Partition Opening: 11 1⁄2" W, 10 7⁄8" H (290 x 275mm).