da-lite da-tex rear tensioned advantage electrol - av format 8 x 8 diagonal
dl4678 features same great design as our advantage electrol except screen is tensioned for an extra flat surface for optimum image quality when using video or data projection . tab guide cable system maintains even lateral tension to hold surface flat while custom slat bar with added weight maintains vertical tension . front projection surfaces standard with black backing for opacity . standard with a decora style three position wall switch . for easy installation the tensioned advantage is available with scb-100 and scb-200 rs-232 serial control board low voltage control unit silent motor or silent motor with low voltage control built into the case . ul plenum rated case . contains a 2 wide slot on the bottom of the case that the screen drops out of . screen material da-tex flexible fabric screen a translucent neutral gray vinyl fabric that allows rear projection in applications where a rigid acrylic or glass screen are not possible . this specially designed gray vinyl surface offers the same high transmission and low reflectance values as a rigid rear projection screen for optimal viewing . it yields excellent color rendition image contrast and a moderately wide viewing angle . ideally suited for both lace and grommet and snap button type screens used in portable installations . this material requires tensioning due to its flexible nature . screen surface can be cleaned with mild soap and water . flame retardant and mildew resistant . viewing angle 30 gain 1.3