Which of the following is a common interior door height?

Which of the following is a common interior door height?

• A. 7'6"
• B. 7'2"
• C. 7'
• D. 6'8"

Answer: (D)

Interior doors follow standard sizes to fit typical room heights and trim. The common interior door height is six feet eight inches. This height works well with standard eight-foot room ceilings, leaving enough headroom for trim, doors, and hardware while keeping the doorway proportion comfortable in most spaces. Taller options—seven feet or more—exist but are less common because they require larger rough openings, different jambs and trim, and higher cost. That’s why six feet eight inches is the standard you’ll see most often.

Interior doors follow standard sizes to fit typical room heights and trim. The common interior door height is six feet eight inches. This height works well with standard eight-foot room ceilings, leaving enough headroom for trim, doors, and hardware while keeping the doorway proportion comfortable in most spaces. Taller options—seven feet or more—exist but are less common because they require larger rough openings, different jambs and trim, and higher cost. That’s why six feet eight inches is the standard you’ll see most often.