GC-144 OFF WHITE SPEAKER FABRIC. Premium Speaker Grille Fabric – Acoustically Transparent. This is not a standard household fabric like others sell. The fabric is designed with polyester fabrics for acoustic purposes. Can be used to cover new speaker grilles and acoustic panels. Also, great for recovering older vintage Acoustic Research and KLH speakers. Also good for older Advent speakers and many more. Off white fabric – Acoustically transparent – Flame Resistant – Non-directional pattern – Made in USA. 1 piece that is 36″x 68″. Typically enough to recover 4 (2 pairs) speaker covers.