Thanks for choosing our ZENSTYLE projection screen. This projection screen is made of PVC and polyester silk fabric, which can be smoother and flatter on its surface, and uses a metal shell to prevent damage and deformation in transit. It can pull down to lock the screen to the specified position exactly. The slow retract mechanism uses high-purity lubricating oil and sealed dust-proof structure, long-lasting durability. Prevents light from penetrating the front screen and improve the clarity of the picture. Crisp viewing angles up to 160 degress with a matte white surface diffusing light in all directions. Perfect for home theaters, businesses, and classrooms. It features a lightweight housing and a fabric-resistant, anti-static screen,easy to install and maintain.