Style 7781 E-Glass, 9 oz sq yd, in stock same day ship | Fibre Glast Provides greater strength over standard plain weave fabrics, making it ideal for aerospace applications Available in popular 38" and 50" widths If requested, this fabric can be certified to meet the requirements of: AMS-C-9084 Type VIII-B (Class 1 and 2) AMS-3824A Style 7781, and ASTM D 4029-23 Style 7781, and BMS 9-3 Rev U Ty H3 CL 23
#7781 Fiberglass Cloth - Aircraft Spruce Q: My glasair kit came with 50 wide, 9 oz, style 7781 bidirectional fiberglass cloth Glasair states that the cloth is chemically treated (chemical sizing) for better strength with vinylester resin