Restricted Housing Unit (RHU) blocks are isolation cells where the movement and the privileges are severely restricted. The Unit is used for administrative segregation or disciplinary segregation - inmates remain in their one or two-man cells virtually 24 hours a day. When taken from the cell, the inmate remains completely shackled at all times. The inmate is limited to 3 days of a one-hour recreation time in an outdoor cage. Only three showers per week. The inmate is also restricted to a one 15-minute phone call per week and a limited commissary menu. Inmates are allowed to write and send mail as well as receiving as much mail that comes in like letters, photos, magazines, books and newspapers.