Roc-Lon 100% blackout drapery lining with the added benefits of noise reduction and thermal insulation. Cut by the yard, can order single yard increment with 25 continuous yards maximum. Roc-Lon muslin can be found in hotels, motels, universities, hospitals, homes, restaurants, and professional buildings everywhere. Color: White Ecru Contents: 70% polyester, 30% cotton Width: 54" Maximum cut length: 25 yd.