737: 17 oz. non-woven E glass fabric. Two layers at a 45 fiber orientation are held together by a light stitching. Flat, non-crimped fibers yield reduced print-through and higher stiffness than woven fabrics. Ideal for repairs, tabbing and reinforcing.
738: 17 oz. non-woven E glass fabric. Two layers at a 45 fiber orientation are held together by a light stitching with a .75 oz./sq. ft. mat backing. Flat, non-crimped fibers yield reduced print-through and higher stiffness than woven fabrics. Ideal for repairs, tabbing and reinforcing. Approximately 22 oz./sq. yd. total fabric weight.

Size-50" wide x 20 yd. roll