draper luma 2 - projection screen - 150 in 381 cm - 4 3 - glass beaded - white
206042 size 150 diagonal a heavy-duty projection screen that is an attractive and practical choice wherever a large spring-roller screen is required . its simple design and rugged construction ensure years of dependable operation . glass beaded microscopic spherical glass beads embedded in a matt white base material . due to their spherical shape the glass beads reflect the majority of projected light back to its source . this results in a projected image which is significantly brighter than matt white within an approximate 90 degree viewing cone . the superior on-axis reflectivity of glass beaded material makes it desirable for use with low luminance projection devices including lcd platens and many lcd projectors . it should not be used with ceiling - or floor-mounted projectors . a glass beaded screen will tolerate a higher level of ambient light in the audience area . on axis gain of 2.5 and a recommended viewing cone of 90 degrees . seamless in sizes up to 10 in height .