Particularly with older doors, it is important to measure in more than one location, just in case the door is not perfectly rectangular. If the amounts vary, use the largest figure. Door widths of 30 inches (76 cm), 32 inches (81 cm) and 36 inches (91 cm) are considered “standard. "
Once again, it is wise to measure in more than one spot on the door, just in case it’s not a perfect rectangle. This is especially true for older doors. If the amounts vary, use the largest figure. The most common height for doors is 80 inches (200 cm).
The most common thickness is 1. 75 inches (4. 4 cm).
Measure the width of the door in 3 locations. Use the smallest figure as your measurement. Measure the height of the door right in the middle. Measure from the floor to the underside of the trim at the top of the door. If you must, it is always better to round down than round up. This helps to ensure that your door will fit.
You can also simply draw a diagram with paper and pen.
An in-swing door opens into your house (or into a room), and an out-swing door opens outward.
