21″ Subwoofer Cone 4″ VCID

• Cone body Material:  Kraft Pulp
• Surround Material:  Foam
• Cone Height:  4.70″  (119.5mm)
• Outer Diameter:  20.59″  (523mm)
• Surround Height:  0.984″  (25mm)
• Surround Width:  1.77″  (45mm)
• Voice Coil Opening:  4.059″  (103.1mm)
• Cone Mass:  409 Grams
• Dust Cap Notch:  No