Acoustic fabrics let sound pass through the screen for a better sound experience and placement of speakers behind the screen. This projector screen features Ultra 4K HD Ready acoustically transparent screen material. Designed for hidden speakers or rear (behind the screen) speaker set-up. This angular weave material allows sound to breathe through the screen while simultaneously eliminating the moiré effect. This matte white surface provides excellent color neutrality for superior color reproduction and wide diffusion uniformity.