Sold by the linear yard.
DBM 1808-50 Double Bias +45-45 w/ Lightweight Mat is 18 oz/sq. yard of diagonally stitched fiberglass yarns with the 8 oz/sq FOOT mat stitched on as well. There is no binder in this fabric so you can use epoxy, vinylester, or polyester resin. This stuff is strong! Ideal for stringers and transoms. Price break at 20 yards and full roll(85-90 yards).