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Door-in-door is one of many anti-theft doors. It is also called door-in-door anti-theft door on the market. Simply put. It is a large door with a small door, but the small door cannot let people in or out, only some visible and intangible substances, such as smoke and gas, can enter and exit. So can doors within doors really ventilate? Is door-in-door really useful? Let's take a look.
1. Can the door-in-door really provide ventilation?
The door-in-door can have a certain ventilation effect and is more suitable for installation in a double-yang layout, but its anti-theft performance Compared with the thermal insulation performance, it will be worse. If you really need ventilation, it is recommended to choose a Class A door-in-door, because a door-in-door that meets Class A standards is relatively safer, and its price is about a thousand yuan.
2. Is the door-in-door good?
In fact, the door-in-door is not a real anti-theft door, because the national standard for anti-theft doors does not include ventilation doors. In addition, there is no separate national standard for ventilation doors, so they can only be called safety doors.
After the door-in-door has been used for a long time, the sealing effect of the ventilation door in the middle will be relatively poor, and we need to replace the rubber strips regularly. There is a special design, and the ventilation window adopts the method of installing hundred pages. Baiye can effectively block the line of sight and maintain smooth airflow, but its effect on sound isolation is limited.
According to relevant data, it is not uncommon for door-in-doors to use special tools to penetrate the small holes in the door-in-door and then open the door. According to experts from Qijia.com, the safety bolt must be locked when at home. If you go out or rest at night, you should also lock the ventilation door window.
Conclusion of the article: Many times, safety problems in door-in-doors are actually caused by some details overlooked during daily use. Therefore, developing good habits is also a prerequisite for ensuring the safety of home life. That’s all the relevant knowledge about door-in-door is introduced here. I hope it will be helpful to you. For more relevant knowledge, please continue to pay attention to the Qijia.com information platform.
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