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Question:

What does the fire door frame fill with?

What does the fire door frame fill with?

Answer:

According to the region can not, the requirements are not the same, and some areas require grouting (ie, cement mortar), some areas can be filled....
According to the region can not, the requirements are not the same, and some areas require grouting (ie, cement mortar), some areas can be filled.
The top of the floor if the gap between the door frame and the wall is not the general seal glue on the OK to open the gap, then it is the construction of the marshchel rap snaer に inn              
Fire door frame around the general use of cement and sand filled with the above if the gap is large, then you add a little red brick a muffled boil sail ? ? ? ?  ? ?  ? ?-

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