Description
			    	    	1 - Minimum screw depth / mm
2 - concrete
3 - solid brick
4 - sand-lime brick
5 - aerated concrete
6 - lattice brick
7 - lightweight concrete block
	2 - concrete
3 - solid brick
4 - sand-lime brick
5 - aerated concrete
6 - lattice brick
7 - lightweight concrete block
                                
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