Installing security doors start with attaching hinges to the door with the help of screws
. Hinges should be closed and door be stood at the place supported by two wedges at the bottom and top. Try to leave a 3mm gap between the doors. Ensure that the door swings freely and there's a gap between lock and door of around 3mm. Remaining screws should be drilled. For this mechanism you will require a good quality security door along with screen and components attached. You will need some general tools like chisel, screwdriver, builders square, pencil, measuring tape etc. Thus installing security doors is not a difficult process and can be done by following the above mentioned steps.