1. *100% Natural Coil Spring: Handwoven, healthy, and breathable with a hollow structure, uniform thickness, and resistant to deformation. Provides vision and data protection, vacuum and moisture absorption, air purification, room temperature humidification, and a long service life. Suitable for various interior styles. 2. *Multifunctional: Offers sun protection with 70% light filtration, thermal insulation, waterproofing, UV resistance, partial shading, privacy, furniture and floor protection, breathability, windproofing, anticorrosion, moistureproofing, dustproofing, insulation, UV ray resistance, hue enhancement, light filtering, and adds a natural ambiance, among other features. 3. *Wide Range of Applications: Ideal for balconies, pavilions, private parties, patios, awnings, porches, pergolas, swimming areas, gardens, courtyards, kitchens, restaurants, hotels, offices, tea houses, flower houses, carports, art galleries, and sunflower houses. The reed curtains provide natural filtering, creating a cool and comfortable space with soft light. 4. *Easy Installation: Suitable for both indoor and outdoor use. For outdoor installation: Shutter width (W) Window width 4 inches (10 cm); Shutter height (H) Window height 4 inches (10 cm). For indoor installation: Shutter width (W) Window width 1 cm (0.4 inches); Shutter height (H) Window height.