Projection Screen Portable, 20/30/40/50inch Outdoor Movie Projector Screen, Anti-Crease & Lightweight Carry Screen For Home Theater/Office Conference/Camping Party/Office Travel, Ratio 4:3/16:9 ( Colo

High Quality Materials: High Strength aluminum alloy shell design, better protection of the screen, durable, better balance Stability: Cross-cut support and self-locking design, the bracket and the lock are two in one, the operation is simple and fast. High Performance: The screen can enhance the contrast and clarity of text and images, reducing eye fatigue. Unique Design: The protector Screen uses standard black backing material to eliminate light penetration; 4-side black Edging enhances picture contrast ratio and absorb light overshoot, assuring best quality video image. Widely Used: Support LED , you can display company graphics and data in the office, you can also watch movies outdoors and indoors, perhaps playing an important role in courses or presentations.