Its 100% cotton fabric used for insulation of galvanized steel ducting which is available in to two sizes 6oz and 8oz.
Cotton Grey Fabric 6 OZ
Construction : 10/1×10/1×25/26×24
Width : 36 Inches/Roll
Cotton Grey Fabric 8 OZ
Construction : 10/1×8/1×25/26×24
Width : 36 Inches/Roll