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If it is too large, you can stuff small, broken bricks, and then fill it with cement mixed sand, if the seam is small, you can directly use sealant to punch it in, and seal it. Inject a few more times.
If the original sliding door is not needed, if there is no later addition, then it is needed.
In general, it is recommended to stay 1 to 2 cm above the ground. >>>More
The standard should be specially customized, and the security door is provided according to the user's requirements.
The security door at home is very important, it is an important guarantee of our home security. When buying an security door, some people will have questions:What is the difference between an security door with a peephole and an anti-theft door without a peephole? >>>More
Hello, the anti-theft door is equipped with an anti-theft lock, which can resist abnormal opening under certain conditions within a certain period of time, has a certain safety protection performance and meets the corresponding anti-theft security level of the door. >>>More