Custom FR4 Fiberglass Sheet – 0.5mm to 5mm – CNC Cut Epoxy Board for PCB & Insulation

High-Performance FR4 Fiberglass Epoxy Sheets – 0.5mm to 5mm Thickness – Custom Insulation Boards for PCB, CNC & Industrial Use Looking for a high-strength, flame-retardant insulation material for your next project? Our FR4 Fiberglass Epoxy Sheets, available in thicknesses from 0.5mm (0.02") to 5mm (3/16"), are the perfect solution for a wide range of applications including PCB substrate fabrication, electrical insulation panels, high-temperature gaskets, and precision CNC machining. Made from glass fiber reinforced epoxy resin, these water green FR4 boards offer excellent mechanical properties, high dielectric strength, and outstanding dimensional stability. Whether you're building circuit boards, insulating industrial equipment, or creating custom electrical enclosures, our epoxy resin boards provide the reliable performance you need. Available in multiple sizes from 100×100mm (4" × 4") to 500×300mm (19.7" × 11.8"), these sheets are designed for both prototyping and bulk manufactu