Retrofit Kit 600/700 to RA770 with Silicone CoverIntegrate your Apollo RA770 marine stereo seamlessly into an existing Fusion 755 Series, 750 Series or 650 Series cutout with the MS-RA770 Retrofit Kit. The dust cover is shaped to perfectly fit your Apollo RA770 when installed using this retrofit kit, accommodating the larger screw covers.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.