Contact Us Contact us using the information below to learn more about how you can benefit from our services. Mac-Sea Enterprises, Inc. PO Box 9396 Erie, PA 16505 Phone: 800-832-6470 / 814-836-9993 Fax: 814-836-1333 E-mail: mac-sea@msn.com Hours of Operation Our office hours are from 9:00 am to 4:30 pm, eastern time, Monday through Friday. We also have a 24-hour answering service.