The door frame is generally taller than the window frame. This is due to the standard dimensions of door and window frames in residential and commercial buildings. Door frames are typically designed to accommodate standard door sizes, which are usually taller than standard window sizes. For instance, standard door heights range from 6 feet 8 inches to 7 feet, while standard window heights typically range from 3 feet to 4 feet. This difference in size is a result of the functional requirements of doors and windows. Doors are designed to provide access and are often used as primary entries, thus requiring a taller frame to accommodate taller individuals. Windows, on the other hand, are primarily used for ventilation and natural light, and their height is optimized for these purposes.

According to the American National Standards Institute (ANSI), the average door height in the United States is 6 feet 8 inches, while the average window height is around 3 feet to 4 feet. This discrepancy in dimensions clearly indicates that door frames are generally taller than window frames. Additionally, the width of door frames is also typically greater than that of window frames, further emphasizing the taller nature of door frames. The larger width and height of door frames are necessary to accommodate the larger size of doors, which are essential for egress and entry into buildings.

Furthermore, the architectural design of buildings often dictates the dimensions of door and window frames. In many cases, doors are designed to be the focal point of a building's facade, and their taller frames contribute to a more imposing and welcoming appearance. Conversely, window frames are often designed to blend seamlessly with the overall aesthetic of the building, which does not necessitate a taller frame.

In conclusion, the door frame is taller than the window frame due to the standard dimensions and functional requirements of doors and windows. The ANSI standards and architectural design considerations further support this observation.