Firox Security Systems manufactures Sound Proof Steel Door. Firox Security Systems is an ISO 9001:2000 certified company. The Company also manufactures various types of doors. The Sound Proof Steel Door, Model JH-210, has thick steel body built to resist heavy blows. The Sound Proof Steel Door has hinges which open in three directions. This Steel Door has movable upper bar and three steel locking dead bolts. This Steel Door has attractive door handle and inbuilt doorbell and 180 degree viewer.