When selecting the size of a custom door, there are two important factors to consider: structural stability and functionality.

The material of the custom door determines its weight, which impacts how the door is installed. The fixing method and hinges are key aspects to evaluate. If these elements aren't properly balanced, the door may not be securely mounted, leading to potential safety risks and inconvenience in daily use.

For custom doors with openwork designs, such as patterns or railings, it’s essential to choose the right gap size. Gaps that are too large can compromise the door's security, while gaps that are too small might affect its aesthetic appeal. Ideally, the gaps should be small enough to prevent both adults and children from passing through, ensuring that a child's head cannot fit through the openings. This helps eliminate the risk of a child getting stuck while attempting to pass through the door.

By considering these factors, you can ensure that your custom door is both secure and functional.