Wall Openings
in either frame or masonery veneer houses, special framework is required around the windows and door openings. The openings must be framed so that the wall structure is not weakened in any way. The purpose of the frame work is to strengthen the wall and to provide a solid structure to which the window and door frames, the exterior wall sheathing, the plaster base, the drywall, and the interior trim can be nailed. When laying ut the rough window and door openings in a wall frame, we must know thier location and size. this information will be shown either on the plans or in the window and door schedule. The demensions may be given to the center line of the windows and doors or to one edge with the overall width of the opening given.
For an example click Here!

Related Links
Doityourself.com