What is the standard width of a door frame for residential constructions?

The standard width of a door frame in residential construction typically accommodates both size options of 30 inches and 36 inches, which are commonly used for interior and exterior doors, respectively. A 30-inch door provides adequate access for individuals and is a popular choice for interior doors, while a 36-inch door allows for greater accessibility, often required for passageways in homes, particularly in contexts where wheelchair access is necessary.

The choice of door frame width is governed by building codes and regulations aimed at ensuring safety and accessibility standards in residential structures. These width options are designed for functionality, allowing smooth operation of the doors and sufficient space for movement through the openings.

Other options do not align with standard practices in residential construction regarding door frame widths. For instance, a frame that measures 1-0 inches is too narrow for both interior and exterior applications, while a 2-6 inches (31.5 inches) frame is not a standard width, and a 3-6 inches frame is quite uncommon and not typically used in residential settings. Therefore, the option that includes the common widths of 30 and 36 inches is the most appropriate choice.