NEW TEKTRUM 79-INCH 56"x56" TRIPOD PORTABLE PROJECTOR PROJECTION SCREEN 1:1 FORMAT WITH STAND - OFFICE SCHOOL HOME THEATER Viewing Area (W x H): 56"x56";Diagonal: 79";Aspect Ratio: 1:1;Screen Gain: 1.3; Viewing Angle: 160 degree; Screen Material: Matte White;Adjustable height;User's manual is included;High contrast 1.3 gain provides clear and vivid picture; Matte white viewing surface offers picture with uniformity, precise definition, and color clarity; Black masked borders offer excellent image effect;Black backed screen material prevents light penetration; Best for computer, movie, video, slide and overhead projection;Affordable tripod projection screen;