The width of a timber door frame is _______ if the shutter is provided only to one side of the door.
A. 10 mm
B. 50 mm
C. 100 mm
D. 200 mm
Answer:C
The width of a timber door frame is _______ if the shutter is provided only to one side of the door.
A. 10 mm B. 50 mm C. 100 mm D. 200 mm