What does the security door mean by half frame and full frame

The anti-theft door is divided into grades, the thickness of the Grade A security door is about 2 mm, the security door is used in fire and sound insulation, heat insulation and thermal insulation performance of aviation honeycomb aluminum or aluminum silicate rock wool, etc., like the anti-theft performance of the lock of the Grade A security door is B-level, which is what we call the advanced protection level, the Grade A anti-theft door will be more durable.

Security doors are now hierarchical, A. Second. Third.

Fourth.. The best is Grade A. >>>More

The anti-theft door is divided into grades, the thickness of the Grade A security door is about 2 mm, the security door is used in fire and sound insulation, heat insulation and thermal insulation performance of aviation honeycomb aluminum or aluminum silicate rock wool, etc., like the anti-theft performance of the lock of the Grade A security door is B-level, which is what we call the advanced protection level, the Grade A anti-theft door will be more durable.

In the anti-theft door, you can choose to use ABC and other keys to control the opening and locking of the door: A key can be used for decorators, when the door is naturally closed or locked with a key, you can use A, B, C keys to open the door, if the key is thrown into the home, you can also ask the locksmith to open it with a tool (to solve the problem of the anti-dial lock key being lost and locked at home). When the door is locked with the B key, it can be opened with the B or C key, and the A key cannot be opened, at this time, the door and lock also have the function of anti-pry and anti-dialing, and the security level of the lock at this time exceeds the B level. >>>More

A C? The level of the security door is generally A, B, C, D, and I have not heard of this.