What is the standard size for a residential door?

The standard size for a residential door typically measures 36 inches wide by 80 inches tall, with a thickness of 1 ¾ inches. However, door sizes can vary depending on the specific needs of a home. For instance, exterior entry doors may require a height of 96 inches or more to accommodate higher ceilings or grand entryways. Additionally, some older homes or smaller spaces might have doors as narrow as 30 inches. It is essential to measure the door opening accurately before purchasing a replacement door to ensure a proper fit. Custom door sizes are also available to meet unique requirements, enabling homeowners to find the perfect match for their residential entrances.