To determine the door width add at least two inches to the width of the opening or to the outside dimensions of the door trim.
Outside barn doors dimensions.
Barn door measuring guide for door openings with casing molding.
Add 1 to 2 per door for overlap depending on privacy needs.
Measure from outside to outside of casing molding.
Sheetrocked opening no trim or casing width.
6 x9 12 x9 total 6 x10 12 x10 total 6 x12 12 x12 total 7 x9 14 x9 total 7 x10 14 x10 total 7 x12 14 x12 total.
The width of your opening the height of your opening from the floor to the top of the opening the space between the top of the opening to the ceiling and the width of the right and left walls of your opening.
Ideally the door will cover 2 to 3 inches beyond the opening on each side.
Total door width will be 36.
Most barn door sizes fall anywhere between 36 wide on the shorter side by 96 tall on the longer side.
Sliding doors should extend at least an inch beyond the sides of the opening that don t have trim or an inch beyond the moldings of openings with trim.
Generally most standard barn doors are approximately 36 x 84 or 42 x 80 with enough extra lip to overlap most standard door frames 36 x 80 by an inch or so.
For the width of your barn door we recommend at least a 4 overlay.
If the doorway has moldings measure from outside edge to outside edge to determine the proper door width add about 4 to 6 inches to your measurement.
Measure from inside to inside of the opening.
For example if you have a 30 opening you would order at least a 34 barn door.
Add 4 to the measurement and you have your recommended door width.
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In this example the opening width is 32 4.
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