West Systems 73820 Biaxial Fiberglass Fabric with Mat 50" x 20 Yards

The West Systems 73820 is a high-performance 17 oz. non-woven E-glass biaxial fabric designed for marine and composite applications. This engineered fabric features two layers of fiberglass oriented at ±45 degrees, held together with light stitching and backed with a 0.75 oz./sq. ft. chopped strand mat for enhanced bonding properties.

Key Features:

• Biaxial ±45° fiber orientation provides excellent torsional strength and flexibility
• Non-crimped flat fibers deliver superior stiffness compared to traditional woven fabrics
• Minimal print-through for smooth, professional surface finishes
• Mat backing improves resin adhesion and secondary bonding capabilities
• 50-inch width x 20 yard roll provides extensive coverage for large projects
• 17 oz. per square yard weight offers optimal strength-to-weight ratio

This fabric is ideal for structural repairs, laminate reinforcement, and composite fabrication where diagonal fiber orientation is needed to handle multi-directional loads. The combination of biaxial reinforcement and mat backing makes it particularly well-suited for hull repairs, deck reinforcement, and general fiberglass layup work with epoxy resin systems.