Description : 

• diagonal 1:1 screen format offers 70″x70″ viewing area
• Self-locked system provides variable height settings
• Convenient dual wall and ceiling installation design
• High contrast 1.3 gain let you enjoy clear and vivid picture
• Matte white viewing surface diffuses projected light uniformly
• Standard 4 black masking borders to get better image effect
• Black-backed screen material prevents light penetration
• Washable surface is easy to clean and safekeeping
• Lightweight steel case with reliable spring inside for simple installation
• Stable quality with competitive prices
• Ideal for computer, video, slide and overhead projection in the home, office or classroom