50A Weatherproof Plug Cover. At Marinco, we make electrical products that stand up to the harshest environments. Every product we make is designed to withstand the rigors of life at sea.. Use with 6361CRN or 6365CRN. Can be used on both male and female ends. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.