PRODUCT FEATURES: Dual wall and ceiling - perfect for home / business Designed for wall or ceiling installation Advance auto locking system - easy lock to all position Standard 4-side black masking border - enhance viewing area when projection image Durable and easy to clean 160 degree wide viewing angle with 1.1 / 1.0 gain for an application in home cinema or business presentation High effective scattered screen angle - clear picture Standard pull cord - easy pull down from high ceiling