4” Dual Cone Full range Speakers – Completely Water Proof – For Marine or Car Door Use – Polypropelyne Cone with Cloth Surround – Built-In Molded Grill – Molded ABS Plastic Basket – 15 Oz. Circuit magnet – Frequency Response: 100 Hz-18 Khz – Impedance: 4 Ohms – Mounting Depth: Only 3” – Black Color Marine Speaker – Complete Pair with wire & Mounting Hardware – Cut-out Size: 97 mm