Blackout alternating shades are window solutions designed to provide control of light and darkness in a room.

1. Light Control: Alternating room darkening shades provide precise control over the amount of light entering the room. By adjusting the angle of the strips, you can regulate the amount of natural light you want to let in.
2. Privacy: These blinds also help maintain privacy in the room. By angling the strips in a specific position, you can block out prying eyes from the outside while still maintaining some outward visibility.
3. Thermal insulation: Some darkening alternating blinds are designed to provide some thermal insulation. In winter, they can help reduce heat loss, while in summer, they can help block outside heat, improving the energy efficiency of the room.
4. Aesthetics: These blinds come in a variety of styles, colors, and materials, allowing you to match them to your room's decor. They can therefore contribute to the aesthetics of your space while fulfilling their function of darkening and light control.

Blackout alternating shades are versatile and popular in many interiors due to their ability to provide a balance between natural light, privacy and thermal insulation. About 85% obscuration.