... FS-173, Cover material: stainless steel 201 / 304 4, Machine body material: iron5, Cover finish: mirror / matt / ... : in one part / in two parts7, Cover size: 320 * 130 mm8, Box size: 305 * 110 * 50 mm9 ... The body is thin and beautiful, used imported spring, can run 50 thousand times. Used low ... wind power into consideration, twin-cylinder floor spring should be chosen regardless of door size. This ...