Which door is known for allowing light while maintaining some degree of privacy?

The louver door is specifically designed to allow light to pass through while providing a sense of privacy due to its slatted construction. The angled slats create openings that let in natural light and promote airflow, making it ideal for spaces where some visibility and ventilation are desired, yet a certain level of privacy must be maintained.

In contrast, flush doors are typically solid and do not offer much visibility or light penetration. Panel doors can vary in design, mostly focusing on aesthetics rather than light and privacy balance. Bi-fold doors, while allowing openness and light when fully opened, are not primarily designed to partially obscure views while still letting in light. Therefore, the louver door stands out as the best option for achieving a blend of light access and privacy.