Rarely answered answer
You may measure your door by taking the following measurements
- Measure the width of the door in 3 locations - top, middle and bottom and take the biggest measurement
- Measure the height of the door in 2 location - by the handle and by the hinge side. Take the biggest measurements.
- Measure the width of the door in 3 locations - top, middle and bottom and take the biggest measurement.
- This is the opening in the wall where pre hung door is being installed. Rough opening must be 2 - 2.5" wider and 1.25" higher than the door slab to leave room for jambs and constructing foam.
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