| 摘要 |
A metal door frame for mounting onto an existing wood door frame of a building comprises side and top members that are to be secured onto respective side and top sections of the existing door frame. A threshold member is mounted onto or into the bottoms of the side members of the outer door frame, the threshold member being adjustable relative to the side members enabling the threshold member to engage and extend along the threshold of the existing frame regardless of the position of the existing threshold.
|
