本帖最后由 APORO 于 2012-2-29 00:16 编辑 , a* z5 I5 O& M- A# _$ J* a! e; H" g- G
measure 2 inchs away from inside face of window fram, there must be a jack stud/ king stud.1 `! y9 d, A. s# A J, u; r
_9 Z* o" {4 ~/ ?Or go as close as you can to the ceiling, and try to hit the double top plates.7 \" n4 d' C3 ~' d