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Measure rough opening in wall framing
Measure from the exterior of the building, using the OSMBM (Outside Brickmold Measurement), that is from the outside edge of the window to outside edge of the window, as illustrated below.
All measurements to be provided in inches as Width x Height
Indicate the wall thickness based off the construction of your building.
(Window comes with 3-1/4” jamb with 3/4” return and 6” jamb extension loose.)
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