Securikey Half Dome Polycarbonate Mirror is ideal for use in cells, day rooms, visitor areas, or any other area that requires wide area surveillance. It is also perfect at T-Junctions, eliminating blind spots around corners. Widely used in hospital psychiatric wards, prisons and police stations. Prevents surprise attacks or collisions and ensures staff, patient and inmate safety. Shatterproof Polycarbonate face withstands repeated blows and it has a high heat resistance (240 degrees). Rigid steel frame bolts to wall and ceiling preventing removal.