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If there are materials, of course, it is better to use cement, which is stronger, and if you want to buy a bottle of foam to fill.
The gap left by replacing the security door should not be wide, just put on the sealant.
Because there is a height difference between the left and right sides of the door frame, the force is uneven when the iron sheet is formed and extruded. >>>More
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The door frame can be filled with styrofoam (sprayed like foam) or cement sand, and the outer surface is sealed with white cement. >>>More
The solution is to increase the thickness of the leather strip, replace the thicker sealing strip, make the façade and the door frame tight, and push the door leaf outward.