Carl&rsquo;s SheerWeave, Projector Screen Material, Acoustically Transparent, White, Gain 1.0 (2.39:1 | 41x98 | 106-in) SheerWeave Acoustically Transparent Projector Screen Material is a front projection surface which has a 5% open weave allowing sound to pass through when speakers are placed behind your screen (max loss of 4 dB). Its white surface and gain of 1.0 diffuse light in all directions so the image can be seen from any angle when ambient light is controlled/dark viewing environment. Carl's SheerWeave Material is made of polyester and works best for indoor applications on a wooden fixed frame, or can be safely stored rolled. A SheerWeave Screen is stiff and sturdy, resulting in a screen that hangs nice and flat without the need to be stretched. View our Technical Specification [pdf] documents below for additional information including; how to calculate the size of SheerWeave to purchase, shipping specifications, installation guide and a comparison to Carl's other projector screen materials. SheerWeave is the same on both sides allowing you to project the image onto either side of the fabric. Ships Rolled on a Tube (Do NOT Fold)