This Open weave black grill cloth is virtually 100% acoustically transparent and is a great choice for loudspeaker systems of nearly every style and vintage. Restore your vintage speaker's appearance to like-new condition, or finish your handmade DIY project. Our high grade, affordable speaker grill cloth is sold by the linear yard, so you can get as much or as little as you need for your application. This grill material is made of 100% polyester open weave.