Satin-finish Stainless Steel. Mounts centered through toilet partitions, 1/2 to 2" (12 to 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).