Securikey Quarter Dome Polycarbonate Mirror is widely used in hospital psychiatric wards, prisons and police stations. The quarter dome should be corner mounted at right angle corners to provide 90 degree vision. 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.