4' Compact Marine Box Speakers Great for on your boat or outside your home! FUSION's Marine/Outdoor Box Speakers are carefully designed and manufactured specifically for marine/outdoor use. Featuring an adjustable mounting bracket with all mounting hardware supplied, these speakers are perfect for installation on a alloy vessel where flush mount speakers are not always practical. The solid construction and powerful sound, combined with competitve pricing make the MS-OS420 speakers a great value for money option. Specifications: * Box Type: Sealed * Cone Material:Polypropylene/NBR Surround * Efficiency (1W/1M): 86dB W/M * Frequency Response: 80Hz - 20Hz * Impedance: 4 Ohm * Peak Power: 100W * RMS Power: 25W * Woofer Size: 4' * Tweeter Type: PEI Cone Warning [https://productimageserver.com/prop65/6pt.png]WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov [http://P65Warnings.ca.gov].