FR4 Epoxy Fiberglass Sheet 3240 Board for PCB & CNC | 5–50mm Thick

FR4 Epoxy Fiberglass Sheet – CNC Machinable High-Temperature Insulation Board Durable 3240 FR4 Epoxy Board for PCB, Electrical Insulation, and CNC Applications Looking for a robust, heat-resistant fiberglass plate that’s ideal for both industrial manufacturing and DIY electrical projects? Our FR4 Epoxy Fiberglass Sheets meet the 3240 standard and are built to deliver excellent electrical insulation, thermal resistance, and machinability. Available in a wide range of thicknesses from 5mm to 50mm and sizes from 100×100mm to 300×400mm (approx. 3.94" to 11.81"), they’re perfect for PCB insulation, electrical housings, laser cutting, and CNC fabrication. Key Features and Benefits of FR4 Fiberglass Sheets High Mechanical and Dielectric Strength Made from flame-retardant epoxy resin and woven fiberglass, this board ensures strong insulation even under high-voltage conditions. It’s widely used in high-frequency circuit boards, transformers, and electric panels. CNC Machinable for Custom Appli