| Quantity: | |
|---|---|
| A single door panel, structurally stable and not easily deformed. |
| Due to its single-leaf, integral structure, its door gaps are usually fewer than double doors, making it relatively easier to achieve a good seal. |
| Compared to double doors and mother-and-daughter doors, single doors are generally cheaper and less expensive with the same materials and craftsmanship. |
| Inward-opening doors occupy interior space, requiring careful consideration of the entryway layout; outward-opening doors do not occupy interior space, but must ensure that outward opening is permissible in public hallways and does not obstruct others. |
