When measuring for casing length add at least 2 1 2 inches 3 inches is best to the height of the opening for the two vertical pieces and 6 inches for the horizontal piece across the top.
Interior door jamb sizes.
Interior and exterior walls have different measurements due to different types of building materials present.
Typical door jamb sizes are.
In order for the door to fit accurately to the opening without the possibility of future problems you have to get the true measurement of the wall for the jamb.
The depth of a.
Keep in mind that a traditional 2 x4 is actually only 1 1 2 x3 1 2.
Interior doors come in standard heights widths and thicknesses as follows.
Standard interior door height is 80 inches.
4 9 16 for 2x4 frame with drywall 5 1 2 for 2x4 frame with stucco or thick drywall 6 9 16 for 2x6 frame or block wall.
In stock you will also find a slightly shorter 78 inch door.
Then you need to measure the width most common width are 2 6.
Called a 6 6 door it s reserved for.
How to measure your existing standard interior door size to measure your existing door you need to take a measuring tape and measure from the bottom of the door to the top of the door most common doors measure.
Standard door casing is typically 2 1 4 inch wide and about 5 8 inch thick.