18″ Carbon Fiber Subwoofer Cone - Big Roll - 4″ Opening

• Cone body Material: Carbon Fiber
• Surround Material: Foam
• Cone Height: 3.93″  (100mm)
• Outer Diameter:  17.91″  (455mm)
• Surround Height:  1.38″  (35mm)
• Surround Width: 1.77″  (45mm)
• Voice Coil Opening: 3.97″  (101mm)
• Cone Mass: Coming Soon
• Dust Cap Notch: None