-
Anonymous users2024-01-24The integrated door of the anti-theft door has no cat's eye, and there is a protective net outside the door to open the small door directly to see that people outside can also protect their own safety and ventilation.
There is no grade for the security door in the door. If you see a grade stamp when you buy an security door. Then this is pure fraud.
In the case of poor house type, poor ventilation from north to south or east to west, the door in the door is still useful.
In general, it is better to use a door-in-door. The so-called [door in the door] is to open a small door on the fire prevention and anti-theft door, nail the screen window on the newly opened door cherry blossom hole, and then press a closed door at the screen window inside the anti-theft door. When ventilation is needed, it is turned on and closed when it is not needed. >>>More
It depends on your needs, if the indoor ventilation is not very good, it is recommended to install such a door.
The star and moon god is good. Their door-in-door products are punched, that is, the ventilation holes are stamped out on the iron sheet, not a cut and then a ventilation window is installed. In this way, the direct stamping does not affect the safety.