Fins are vertical or horizontal projections attached to a building's exterior. They are designed to provide shading and control the amount of sunlight entering a space. Fins can be made from various materials, including aluminum, glass, or composite materials. The spacing and angle of the fins are carefully considered to optimize shading and daylighting, enhancing energy efficiency and visual comfort. Louvers are similar to fins but are adjustable or fixed slats designed to allow or restrict the flow of air, light, or visibility. Louvers can be horizontal or vertical and are commonly used for ventilation, privacy, and sun control. They are often found on windows, façades, or building openings. The adjustability of louvers allows for dynamic control over the environment within a building, contributing to energy efficiency. Shading screens are designed to mitigate solar heat gain and glare while maintaining visibility and aesthetics. They can be made from various materials, including metal, fabric, or even vegetation. Shading screens are strategically placed on the exterior of a building to filter sunlight, reducing the need for artificial lighting and cooling systems. The design of shading screens can vary widely, allowing for creativity in architectural expression.